Update menus.php : Add a.alias to group

MS SQL requires a.alias in the group clause.
[imp] Implementing popup warning if no items are selected when marking as read or unread. Fixes #4811

Adding space before comma

Adding space before comma

Adding space before comma (had it right the first time!)
[fix] "Save as copy" button of User Group. Fixes #4778. Fixes #4798

Add return false if group could not be saved

Change name of method to fix notice errors
Fix for Plugin Manager: Plugins view showing whitespace when sidebar is collapsed
Merge pull request #4796 from sovainfo/patch-15

Update menus.php : Add a.alias to group
Merge pull request #4824 from manojLondhe/sidebar

Fix for 'Plugin Manager: Plugins' view showing white-space when sidebar is collapsed