Add tmux config
gtk: update
gtk: use Numix dark for GTK2 too
emacs: add bats-mode

Work in progress!
gtk: config light theme for helper script
emacs: auto-dim-other-buffers
emacs: clean some minor mode lighters
emacs: use actionscript-mode
emacs: buffer-menu --> ibuffer
zsh: enhance PS1 on remote hosts
awesome: update IP address used to check for network connectivity
emacs: enable some "confusing" commands
emacs: update ace-jump-mode config
emacs: enhance smart-mode-line config