Install and use pathogen (finally!)

Also move l9 and fuf in the pathogen bundle/ dir
Try out CtrlP instead of FuzzyFinder
Oops. Re-add nerdtree after pathogen change.
Try out syntastic.
Revert "Try out CtrlP instead of FuzzyFinder"

This reverts commit b11877db4c97a3169a5665201fd0b66eee4dcf2b.
I like fuzzyfinder better. :/