cleanup - delete .lesshst.

Conflicts:
	bin/cleanup
init.el - added php-mode.
git - renamed g-sibling-cherry-pick to g-sibling-push-cherry; hide sibling 'behind' flag since it doesn't matter most of the time.
clean - .pki and .local/share.
cleanup - delete .xsel.log.
tmux - Fixed so that emacs control keys now work properly when run from inside tmux.
tmux - disable status bar.
emacs - removed ac-nrepl commented out stuff.
tmux - Fixed 256 color support to work in and out of tmux.
Merge from sibling 'master' into 'personal'.