tmux.conf: start window numbering at 1 + aggressive-resize.
Revert "Use google-chrome-unstable as default browser."

This reverts commit 934c62172bcf69d01657c94fec5cef0326cec97c.

Conflicts:
	xmonad.hs
Remove dotfiles for irb and wget
Update credentials in gitconfig.
Set xrandr mode in xinitrc.
Set environment variables for work.