Fix null path error when uninstalling jQuery NuGet package.

Run uninstall PowerShell scripts before the NuGet package is
removed so the jQuery uninstall.ps1 script can find the Scripts
folder in the project when uninstalling.

src/AddIns/Misc/PackageManagement/Project/Src/Design/FakePackageManagementProject.cs

@@ -183,12 +183,12 @@ namespace ICSharpCode.PackageManagement.Design
 			}
 		}
 		
-		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoved;
+		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoving;
 		
-		public void FirePackageReferenceRemovedEvent(PackageOperationEventArgs e)
+		public void FirePackageReferenceRemovingEvent(PackageOperationEventArgs e)
 		{
-			if (PackageReferenceRemoved != null) {
-				PackageReferenceRemoved(this, e);
+			if (PackageReferenceRemoving != null) {
+				PackageReferenceRemoving(this, e);
 			}
 		}
 		

src/AddIns/Misc/PackageManagement/Project/Src/Design/FakeProjectManager.cs

@@ -35,18 +35,18 @@ namespace ICSharpCode.PackageManagement.Design
 			}
 		}
 
-		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoved;
+		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoving;
 		
-		protected virtual void OnPackageReferenceRemoved(IPackage package)
+		protected virtual void OnPackageReferenceRemoving(IPackage package)
 		{
-			if (PackageReferenceRemoved != null) {
-				PackageReferenceRemoved(this, new PackageOperationEventArgs(package, null, String.Empty));
+			if (PackageReferenceRemoving != null) {
+				PackageReferenceRemoving(this, new PackageOperationEventArgs(package, null, String.Empty));
 			}
 		}
 		
 		#pragma warning disable 67
 		public event EventHandler<PackageOperationEventArgs> PackageReferenceAdding;
-		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoving;
+		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoved;
 		#pragma warning restore 67
 		
 		public IPackageRepository LocalRepository { get; set; }
@@ -87,9 +87,9 @@ namespace ICSharpCode.PackageManagement.Design
 			OnPackageReferenceAdded(package);
 		}
 		
-		public void FirePackageReferenceRemoved(IPackage package)
+		public void FirePackageReferenceRemoving(IPackage package)
 		{
-			OnPackageReferenceRemoved(package);
+			OnPackageReferenceRemoving(package);
 		}
 		
 		public void AddPackageReference(IPackage package, bool ignoreDependencies, bool allowPrereleaseVersions)

src/AddIns/Misc/PackageManagement/Project/Src/IPackageManagementProject.cs

@@ -15,7 +15,7 @@ namespace ICSharpCode.PackageManagement
 		event EventHandler<PackageOperationEventArgs> PackageInstalled;
 		event EventHandler<PackageOperationEventArgs> PackageUninstalled;
 		event EventHandler<PackageOperationEventArgs> PackageReferenceAdded;
-		event EventHandler<PackageOperationEventArgs> PackageReferenceRemoved;
+		event EventHandler<PackageOperationEventArgs> PackageReferenceRemoving;
 		
 		string Name { get; }
 		ILogger Logger { get; set; }

src/AddIns/Misc/PackageManagement/Project/Src/PackageManagementProject.cs

@@ -64,9 +64,9 @@ namespace ICSharpCode.PackageManagement
 			remove { projectManager.PackageReferenceAdded -= value; }
 		}
 		
-		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoved {
-			add { projectManager.PackageReferenceRemoved += value; }
-			remove { projectManager.PackageReferenceRemoved -= value; }
+		public event EventHandler<PackageOperationEventArgs> PackageReferenceRemoving {
+			add { projectManager.PackageReferenceRemoving += value; }
+			remove { projectManager.PackageReferenceRemoving -= value; }
 		}
 		
 		public bool IsPackageInstalled(IPackage package)

src/AddIns/Misc/PackageManagement/Project/Src/Scripting/RunAllProjectPackageScriptsAction.cs

@@ -22,7 +22,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		List<EventHandler<PackageOperationEventArgs>> packageReferenceAddedHandlers =
 			new List<EventHandler<PackageOperationEventArgs>>();
 		
-		List<EventHandler<PackageOperationEventArgs>> packageReferenceRemovedHandlers =
+		List<EventHandler<PackageOperationEventArgs>> packageReferenceRemovingHandlers =
 			new List<EventHandler<PackageOperationEventArgs>>();
 		
 		public RunAllProjectPackageScriptsAction(
@@ -68,7 +68,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 			foreach (IPackageManagementProject project in projects) {
 				RegisterPackageInstalledEvent(project);
 				RegisterPackageReferenceAddedEvent(project);
-				RegisterPackageReferenceRemovedEvent(project);
+				RegisterPackageReferenceRemovingEvent(project);
 			}
 		}
 		
@@ -88,12 +88,12 @@ namespace ICSharpCode.PackageManagement.Scripting
 			project.PackageReferenceAdded += referenceAddedHandler;
 		}
 		
-		void RegisterPackageReferenceRemovedEvent(IPackageManagementProject project)
+		void RegisterPackageReferenceRemovingEvent(IPackageManagementProject project)
 		{
-			EventHandler<PackageOperationEventArgs> referenceRemovedHandler =
-				(_, e) => PackageReferenceRemoved(project, e);
-			packageReferenceRemovedHandlers.Add(referenceRemovedHandler);
-			project.PackageReferenceRemoved += referenceRemovedHandler;
+			EventHandler<PackageOperationEventArgs> referenceRemovingHandler =
+				(_, e) => PackageReferenceRemoving(project, e);
+			packageReferenceRemovingHandlers.Add(referenceRemovingHandler);
+			project.PackageReferenceRemoving += referenceRemovingHandler;
 		}
 		
 		void UnregisterEvents()
@@ -101,7 +101,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 			foreach (IPackageManagementProject project in projects) {
 				UnregisterPackageInstalledEvent(project);
 				UnregisterPackageReferenceAddedEvent(project);
-				UnregisterPackageReferenceRemovedEvent(project);
+				UnregisterPackageReferenceRemovingEvent(project);
 			}
 		}
 		
@@ -119,11 +119,11 @@ namespace ICSharpCode.PackageManagement.Scripting
 			project.PackageReferenceAdded -= handler;
 		}
 		
-		void UnregisterPackageReferenceRemovedEvent(IPackageManagementProject project)
+		void UnregisterPackageReferenceRemovingEvent(IPackageManagementProject project)
 		{
-			EventHandler<PackageOperationEventArgs> handler = packageReferenceRemovedHandlers.First();
-			packageReferenceRemovedHandlers.Remove(handler);
-			project.PackageReferenceRemoved -= handler;
+			EventHandler<PackageOperationEventArgs> handler = packageReferenceRemovingHandlers.First();
+			packageReferenceRemovingHandlers.Remove(handler);
+			project.PackageReferenceRemoving -= handler;
 		}
 		
 		void PackageInstalled(IPackageManagementProject project, PackageOperationEventArgs e)
@@ -136,7 +136,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 			RunInstallScript(project, e);
 		}
 		
-		void PackageReferenceRemoved(IPackageManagementProject project, PackageOperationEventArgs e)
+		void PackageReferenceRemoving(IPackageManagementProject project, PackageOperationEventArgs e)
 		{
 			RunUninstallScript(project, e);
 		}

src/AddIns/Misc/PackageManagement/Project/Src/Scripting/RunPackageScriptsAction.cs

@@ -39,14 +39,14 @@ namespace ICSharpCode.PackageManagement.Scripting
 		{
 			project.PackageInstalled += PackageInstalled;
 			project.PackageReferenceAdded += PackageReferenceAdded;
-			project.PackageReferenceRemoved += PackageReferenceRemoved;
+			project.PackageReferenceRemoving += PackageReferenceRemoving;
 		}
 		
 		void UnregisterEvents()
 		{
 			project.PackageInstalled -= PackageInstalled;
 			project.PackageReferenceAdded -= PackageReferenceAdded;
-			project.PackageReferenceRemoved -= PackageReferenceRemoved;
+			project.PackageReferenceRemoving -= PackageReferenceRemoving;
 		}
 		
 		void PackageInstalled(object sender, PackageOperationEventArgs e)
@@ -54,7 +54,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 			RunInitScript(e);
 		}
 		
-		void PackageReferenceRemoved(object sender, PackageOperationEventArgs e)
+		void PackageReferenceRemoving(object sender, PackageOperationEventArgs e)
 		{
 			RunUninstallScript(e);
 		}

src/AddIns/Misc/PackageManagement/Test/Src/InstalledPackagesViewModelTests.cs

@@ -100,7 +100,7 @@ namespace PackageManagement.Tests
 		}
 		
 		[Test]
-		public void PackageViewModels_PackageReferenceIsRemoved_PackageViewModelsIsUpdated()
+		public void PackageViewModels_PackageReferenceIsBeingRemoved_PackageViewModelsIsUpdated()
 		{
 			CreateViewModel();
 			FakePackage package = AddPackageToProjectLocalRepository();
@@ -159,7 +159,7 @@ namespace PackageManagement.Tests
 		}
 		
 		[Test]
-		public void PackageViewModels_PackageReferenceIsRemovedAfterViewModelIsDisposed_PackageViewModelsIsNotUpdated()
+		public void PackageViewModels_PackageReferenceIsBeingRemovedAfterViewModelIsDisposed_PackageViewModelsIsNotUpdated()
 		{
 			CreateViewModel();
 			FakePackage package = AddPackageToProjectLocalRepository();

src/AddIns/Misc/PackageManagement/Test/Src/PackageManagementProjectTests.cs

@@ -486,14 +486,14 @@ namespace PackageManagement.Tests
 		}
 		
 		[Test]
-		public void PackageReferenceRemoved_ProjectManagerPackageReferenceRemovedEventFired_EventFiresWithPackage()
+		public void PackageReferenceRemoving_ProjectManagerPackageReferenceRemovingEventFired_EventFiresWithPackage()
 		{
 			CreateProject();
 			PackageOperationEventArgs eventArgs = null;
-			project.PackageReferenceRemoved += (sender, e) => eventArgs = e;
+			project.PackageReferenceRemoving += (sender, e) => eventArgs = e;
 			
 			var expectedPackage = new FakePackage();
-			fakeProjectManager.FirePackageReferenceRemoved(expectedPackage);
+			fakeProjectManager.FirePackageReferenceRemoving(expectedPackage);
 			
 			Assert.AreEqual(expectedPackage, eventArgs.Package);
 		}

src/AddIns/Misc/PackageManagement/Test/Src/RunAllProjectPackageScriptsActionTests.cs

@@ -80,9 +80,9 @@ namespace PackageManagement.Tests
 			project.Raise(p => p.PackageReferenceAdded += null, null, eventArgs);
 		}
 		
-		void FirePackageReferenceRemovedEvent(IPackageManagementProject project, PackageOperationEventArgs eventArgs)
+		void FirePackageReferenceRemovingEvent(IPackageManagementProject project, PackageOperationEventArgs eventArgs)
 		{
-			project.Raise(p => p.PackageReferenceRemoved += null, null, eventArgs);
+			project.Raise(p => p.PackageReferenceRemoving += null, null, eventArgs);
 		}
 		
 		IPackageScript CreatePackageScript()
@@ -292,7 +292,7 @@ namespace PackageManagement.Tests
 			string installPath = @"d:\projects\MyProject\packages\foo";
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs(package, installPath);
 			
-			FirePackageReferenceRemovedEvent(project, eventArgs);
+			FirePackageReferenceRemovingEvent(project, eventArgs);
 			
 			scriptFactory.AssertWasCalled(factory => factory.CreatePackageUninstallScript(package, installPath));
 		}
@@ -307,7 +307,7 @@ namespace PackageManagement.Tests
 			SetUninstallScriptToReturnFromScriptFactory(uninstallScript);
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
 			
-			FirePackageReferenceRemovedEvent(project2, eventArgs);
+			FirePackageReferenceRemovingEvent(project2, eventArgs);
 			
 			scriptRunner.AssertWasCalled(runner => runner.Run(uninstallScript));
 		}
@@ -322,7 +322,7 @@ namespace PackageManagement.Tests
 			SetUninstallScriptToReturnFromScriptFactory(uninstallScript);
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
 			
-			FirePackageReferenceRemovedEvent(project2, eventArgs);
+			FirePackageReferenceRemovingEvent(project2, eventArgs);
 			
 			Assert.AreEqual(project2, uninstallScript.Project);
 		}
@@ -337,7 +337,7 @@ namespace PackageManagement.Tests
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
 			
 			action.Dispose();
-			FirePackageReferenceRemovedEvent(project, eventArgs);
+			FirePackageReferenceRemovingEvent(project, eventArgs);
 			
 			scriptRunner.AssertWasNotCalled(runner => runner.Run(uninstallScript));
 		}

src/AddIns/Misc/PackageManagement/Test/Src/Scripting/RunPackageScriptsActionTests.cs

@@ -174,11 +174,11 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Constructor_PackageReferenceIsRemoved_PackageUninstallScriptIsRun()
+		public void Constructor_PackageReferenceIsBeingRemoved_PackageUninstallScriptIsRun()
 		{
 			CreateAction();
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
-			fakeProject.FirePackageReferenceRemovedEvent(eventArgs);
+			fakeProject.FirePackageReferenceRemovingEvent(eventArgs);
 			
 			IPackageScript actualScript = fakeScriptRunner.FirstScriptRun;
 			FakePackageScript expectedScript = fakeScriptFactory.FirstPackageUninstallScriptCreated;
@@ -187,11 +187,11 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Constructor_PackageReferenceIsRemoved_PackageUninstallScriptIsCreated()
+		public void Constructor_PackageReferenceIsBeingRemoved_PackageUninstallScriptIsCreated()
 		{
 			CreateAction();
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs(@"d:\projects\myproject\packages\test");
-			fakeProject.FirePackageReferenceRemovedEvent(eventArgs);
+			fakeProject.FirePackageReferenceRemovingEvent(eventArgs);
 			
 			string path = fakeScriptFactory.FirstPackageInstallDirectoryPassed;
 			
@@ -199,13 +199,13 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Dispose_PackageReferenceIsRemoved_PackageUninstallScriptIsNotRun()
+		public void Dispose_PackageReferenceIsBeingRemoved_PackageUninstallScriptIsNotRun()
 		{
 			CreateAction();
 			action.Dispose();
 			
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
-			fakeProject.FirePackageReferenceRemovedEvent(eventArgs);
+			fakeProject.FirePackageReferenceRemovingEvent(eventArgs);
 			
 			int count = fakeScriptFactory.FakePackageUninstallScriptsCreated.Count;
 			
@@ -213,11 +213,11 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Constructor_PackageReferenceIsRemoved_UninstallScriptIsPassedProject()
+		public void Constructor_PackageReferenceIsBeingRemoved_UninstallScriptIsPassedProject()
 		{
 			CreateAction();
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs();
-			fakeProject.FirePackageReferenceRemovedEvent(eventArgs);
+			fakeProject.FirePackageReferenceRemovingEvent(eventArgs);
 			
 			IPackageManagementProject project = fakeScriptFactory.FirstPackageUninstallScriptCreated.Project;
 			
@@ -225,12 +225,12 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Constructor_PackageReferenceIsRemoved_UninstallScriptIsPassedPackageFromPackageOperationEventArgs()
+		public void Constructor_PackageReferenceIsBeingRemoved_UninstallScriptIsPassedPackageFromPackageOperationEventArgs()
 		{
 			CreateAction();
 			var expectedPackage = new FakePackage();
 			PackageOperationEventArgs eventArgs = CreatePackageOperationEventArgs(expectedPackage);
-			fakeProject.FirePackageReferenceRemovedEvent(eventArgs);
+			fakeProject.FirePackageReferenceRemovingEvent(eventArgs);
 			
 			IPackage package = fakeScriptFactory.FirstPackageUninstallScriptCreated.Package;