Silly attempt to highlight bogus whitespace mix
Disable indent-guides
Add css3 and less(css) file type support
Declar war on mixed indentation :P

Enable the "whitespace" extension on airline, and fix mixed indentation stuff on
my vimrc. I'm still a sucker, but a bit less now.
Some plugin tweaks

- Setup stuff for Startify.
- Remove -quick-match from Unite's 2nd and 3rd invocations, and no longer use
  file_mru on the main one.
Update plugin submodules