fixed chat header height

lib/apps/assistant/page.dart

@@ -180,12 +180,17 @@ class _AssistantDetailState extends State<AssistantDetail> {
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
-                        Text('Jarvis',
+                        Container(
+                          height: 20.0,
+                          child: Text('Jarvis',
                             style: TextStyle(fontWeight: FontWeight.bold),
-                        ),
+                        )),
                         SizedBox(height: 5.0),
-                        Text(lang.onlineActive,
+                        Container(
+                          height: 15.0,
+                          child: Text(lang.onlineActive,
                             style: TextStyle(color: color.onPrimary.withOpacity(0.5), fontSize: 12.0))
+                        )
                       ],
                     ),
                   ),

lib/apps/chat/detail.dart

@@ -197,17 +197,22 @@ class _ChatDetailState extends State<ChatDetail> {
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
-                        Text(
+                        Container(
+                          height: 20.0,
+                          child: Text(
                             friend.name,
                             style: TextStyle(fontWeight: FontWeight.bold),
-                        ),
+                        )),
                         SizedBox(height: 5.0),
-                        Text(friend.isClosed
+                        Container(
+                          height: 15.0,
+                          child: Text(friend.isClosed
                             ? lang.closed
                             : session.onlineLang(lang),
                             style: TextStyle(
                               color: color.onPrimary.withOpacity(0.5),
                               fontSize: 12.0))
+                        )
                       ],
                     ),
                   ),

lib/apps/group_chat/detail.dart

@@ -202,17 +202,23 @@ class _GroupChatDetailState extends State<GroupChatDetail> {
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
-                        Text(
+                        Container(
+                          height: 20.0,
+                          child: Text(
                             this.group!.name,
                             style: TextStyle(fontWeight: FontWeight.bold),
                           ),
+                        ),
                         const SizedBox(height: 5.0),
-                        Text(this.group!.isClosed
+                        Container(
+                          height: 15.0,
+                          child: Text(this.group!.isClosed
                             ? lang.closed
                             : session.onlineLang(lang),
                             style: TextStyle(
                               color: color.onPrimary.withOpacity(0.5),
                               fontSize: 12.0))
+                        )
                       ],
                     ),
                   ),