xmonad: Move screensaver key further away from quit.

I wanted to use the Pause/Break button, but most laptops don't have
that.
git: Add ignore patterns for latex byproducts.
vim: Wildignore java class files.
vim: Remove italics from comments.

This will have to stay while tmux and rxvt fight it out.
vim: Update ctrlp, surround; install localvimrc.
vim: Rearrange Command Line Editing options, add ignore patterns.
vim: Force CtrlP into a particular working path mode.
vim: Set UltiSnips snippets directory.