Allow creating unencrypted accounts again

src/widget/loginscreen.cpp

@@ -76,7 +76,7 @@ void LoginScreen::onCreateNewProfile()
         return;
     }
 
-    if (pass.size() < 6)
+    if (pass.size()!=0 && pass.size() < 6)
     {
         QMessageBox::critical(this, tr("Couldn't create a new profile"), tr("The password must be at least 6 characters."));
         return;

src/widget/loginscreen.ui

@@ -375,9 +375,6 @@ margin-bottom:45px;</string>
          </item>
          <item>
           <widget class="QLineEdit" name="newPass">
-           <property name="maxLength">
-            <number>64</number>
-           </property>
            <property name="echoMode">
             <enum>QLineEdit::Password</enum>
            </property>