Add fugitive.
Make vundle config a proper standalone vim config.

http://gmarik.info/blog/2011/05/17/chicken-or-egg-dilemma
Delete comment.
Add airline. Switch from minibufexpl->bufferline.
Remove unused move-lines mappings.

I'd like to use them, but the keys conflict with my window navigation
mappings, and I can't think of anything better.
Remove indent rehighlighting because it breaks '.'
Remove jk maps.
Organize vimrc.