Update gitconfig's email address.
Update git's author name and core editor.
Add easier mappings for Tmux.

Allow Alt+h/j/k/l to move around panes, without the Tmux global key.
Also, allow Alt+H/J/K/L to resize panes, without the Tmux global key.
Reorganize vimrc.
Fix colored output for zsh's ls.
Instruct Mutt to use Vim in UTF-8.
Sort Xdefaults to be easier to change the font.
Add RAM and battery widgets to Awesome.
Awesomewm runs Skype on 5th tag.