Removed block title from group menu.
Moved the group menu to the page_top region.
Renamed the machine name of the menu.
Update default theming of the group menu.
Fixed test after moving & renaming the group menu.
Merge pull request #235 from capacity4dev/feature/CFD-150-Group_dashboard-Group_menu

CFD-150 : group dashboard group menu
Merge branch 'develop' into feature/CFD-172-Group_Document_library_Overview_page

and rename menu-group-menu to c4m-og-menu