make `p` allow pasting over and over

(see http://sheerun.net/2014/03/21/how-to-boost-your-vim-productivity/)
make vp not replace copy buffer

(see http://sheerun.net/2014/03/21/how-to-boost-your-vim-productivity/)
Get rid of that dumb window

(see http://sheerun.net/2014/03/21/how-to-boost-your-vim-productivity/)
make ctrlp faster in git dirs