Fix BetterFindBuffer lagg with very large buffers

[evandrocoan]

search on a very big data base hangs the interface for ever and I have to kill it
Usually, search for "if", close it, and search again for "if "
killing plugin_host unhangs Sublime Text
reproduce it on your virtual machine
actually, having a very big Find Results view (260.000 lines) keeps sublime_text at 100% CPU in one core, and no ram usage increase/decrease
But keeps plugin_host at 0%
disable betterfindinbuffer fixes or improves a lot the performance
actually, decouple the syntax/highlight from the plugin code for the Find Results view!