1. Save Mode removed from Template Manager
2. Context Menu for TemplateViewItems (Handled from LocalView for Local Repos)
3. 'showAllTemplates()' replacing 'showRootRegion()'
4. Filter Combobox for templates (Remembers filters also)
5. Search Filter (Synchronized with Filter ComboBoxes)
6. Removed Tabs from Template Manager
7. Removed Buttons from TemplateAbstractView
8. Unused GtkToolButtons removed
9. PushButtons in UI
10. Modal dialog for Import and Move (Works from "All Categories" now too)
11. ContextMenu for TemplateSearchView
12. Delete Categories(Folder) in Settings Menu
13. Save As Template Dialog

Change-Id: I88f6568c35271c17dbd7e6877d50119a8cfe4d60
Reviewed-on: https://gerrit.libreoffice.org/24545Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>