Cleanup dependencies, fix indentation bug

Take a look at it before we merge this into master. Most of it is just removing old unused dependencies & fixing one indentation fail in `lib/sublime-tabs.coffee`.
this worries me a little bit.. if we remove these, are we sure it will work on other user's workspaces?  

also, push to branches on ddavison/sublime-tabs since you have access now.. makes my job much easier as well :+1: