Add vim-less plugin
Update plugins

Added PHP-Indenting-for-VIm, it's a newer version than the one
included in Vim that fixes several indenting problems.

Deleted delimitMate since it breaks C-@ and causes some problems.  I
have also tried AutoClose and auto-pairs, the first one doesn't break
C-@ and the last one has a good set of features, but none works really
well.