Fix error with buffer list plugin when buffers were not in mru list.
Reverts cscope mappings, adds powerline settings.

Changes cscope mappings back to my old mappings.
Shortens the mode display text for Powerline to 1-2 chars.
Adds CtrlP vim plugin.
Adds UltiSnips vim plugin.

Updates vimrc to call pathogen#infect() since
pathogen#runtime_append_all_bundles() caused UltiSnips to not load
properly.
Adds file regex functionality to deploy script.

Adds some more default settings for NERDTree/SuperTab.