- Show or hide tags - initial implementation

- Added menu item on View submenu to allow selecting to show or not show tabs
- Added menu handler to toggle settings and refresh view.
- Added initialization of menu item check state from settings.
- Added settings item to save user preference for showing tabs
- Removed Visual Studio's unnecessary designer file changes to isolate real work.
- Fixed line endings
Merge pull request #1814 from gregsohl/ShowTagsMenuItem

Added a "Show tags" menu item