Fixed important bug: vc.quit now inits all state *for sure*.
Disabled tab_callback in vc.Substitution class: this Easter Egg for tab will just confuse true vim users.

Leo build: 20140821114745
Removed duplicate key in vc.getPublicCommands.

Leo build: 20140821114958
Merge branch 'master' of https://github.com/leo-editor/leo-editor

Conflicts:
	leo/core/commit_timestamp.json

Leo build: 20140821115419