Fixed a minor visual issue with Dock Tab Menu.

Added a separator after Version Control group.
Merge pull request #291 from Therzok/versionControlSeparator

Fixed a minor visual issue with Dock Tab Menu.
Fixed bug 12094 - Open Containing Folder menu item on dock tab.

This allows users to open a file's parent folder in the default file explorer,
using the menu bar on the dock tabs.
Merge pull request #290 from Therzok/openContainingFolder

Fixed bug 12094 - Open Containing Folder menu item on dock tab.
[gtkrc] Disable error bell on Win/Mac

It's not standard behavior on either OS.
[Ide] Fix NRE opening global search

Introduced by 23b066d7
[Ide] TaskService Task should not discard its owner

Should fix BXC11936 - Build errors and warnings accumulated in
between builds.
Fixed bug reported in #35175
Fixed case #35175: Code formatting bug since XS 4.0.8
Bump nrefactory.
Fixed 'Bug 12290 - Incorrect colorization of source tooltips'.
Fixed 'Bug 12216 - UI does not work is stuck in never ending loop '.
Fixed 'Bug 12289 - Invalid cref:T:System.Collections.Generic.IList<T>'.
Fixed 'Bug 12293 - Error while analyzing the file for the semantic
highlighting'.
Fixed 'Bug 12319 - Public setters shown not available when using private getters'
Fixed 'Bug 12332 - Line after #if removed due to message bubble'.
Fixed 'Bug 12378 - Cannot resize columns in search results'
Fixed 'Bug 12379 - Typing a quote in a comment duplicates the quote'.
Improved #290 - Open Containing Folder menu.

No longer show the option for Open Containing Folder when we cannot do this
action.

Instead, hide the command.