[Editor] No mouse interface for editing actors

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What steps will reproduce the problem?
1. Launch the editor
2. Load a world file
3. Notice how you can't drag an actor

What is the expected output? What do you see instead?
- You should be able to drag an actor to change its transform and do other nice 
mouse things with the editor.

Original issue reported on code.google.com by [e-mail] on 18 Mar 2012 at 10:41

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Original comment by [e-mail] on 23 Mar 2012 at 8:52