Add syntax files from upstream vim repository

indent/less.vim

@@ -1,3 +1,20 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
+  
+" Vim indent file
+" Language:	less
+" Maintainer:	Alessandro Vioni <jenoma@gmail.com>
+" URL: https://github.com/genoma/vim-less
+" Last Change:	2014 November 24
+
+if exists("b:did_indent")
+  finish
+endif
+
+runtime! indent/css.vim
+
+" vim:set sw=2:
+
+endif
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'less') == -1
   
 " Vim indent file