terminfo: add an xterm-256color entry
.profile 00_path: refactor append/prepend functions
.profile 00_path: drop old gems section
.profile 00_path: drop macports components
.profile 00_path: add components for homebrew gnu toolchain
.profile 00_path: add trimming logic
ipython: disable powerline
vimrc: turn of obnoxious noshiftround setting (from sensible)
vimrc: more gvim font tweaking