Remove MOUSE_MOVE pathfinding
Fix right clicking on actionbar items to activate them

Fixes #833
Merge pull request #834 from dorkster/bugfixes

Fix right clicking on actionbar items to activate them
Fix infinite loops in WidgetListBox
Merge pull request #835 from dorkster/bugfixes

Fix infinite loops in WidgetListBox
Merge pull request #824 from dorkster/mouse_move

Remove MOUSE_MOVE pathfinding