Update submodule YouCompleteMe 75a3b2f...76b5b36

* YouCompleteMe 75a3b2f...76b5b36 (6):
  > Revert "Don't run the plugin when in diff mode"
  > Merge remote-tracking branch 'origin/master'
  > Merge branch 'master' of git://github.com/Valloric/YouCompleteMe
  > Move identifier related patches to (forked) submodule (ycmd)
  > Update submodule third_party/ycmd ed65a8a...cec91fe
  > Merge remote-tracking branch 'origin/master'