vimrc: use pathogen
gitconfig: remove 'git eat' alias

It moved to a script that did something different
stupidfingers: grep aliases

* grpe
* gerp
vimrc: hide secondary elements
pathogen: add to repository
vim: adjust colors
vimrc: large reshuffle

* remove things that are already defaults
* remove things covered in vim-sensible
* tweak colors for 256