gitconfig: Move my name to the top

It looks better that way.
gitconfig: Add a git g alias for pretty grep
conky: Place date and time on the same line
conky: Add Berlin time
conky: Add Japan time
screenrc: Display ISO style date and 24-hour time
vimrc: Wrap git commit messages to 72 characters

See http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
for rationale.