Disable SVN/GIT menu items when not in a repository

Submitted by sco..@..il.com

Assigned to Peter de Ridder

Link to original bug (#15568)

Description

Right click the desktop. Seems the SVN and GIT menu items are still in the context menu even when they are not sub menus. Clicking them seems to do nothing.

So perhaps they should only be in the menu if they are relavant or they could be greyed out like Paste is when the clipboard is empty so the user is unable to select them if they will not work anyway.