Emacs: Add YASnippet

Also add some LaTeX snippets.
Emacs: Fix evil
ZSH: Add RVM support
Emacs: Add more Delight definitions
zsh: Make M-Backspace behave like bash
zsh: Fix search
zsh: Add randbetween function
zsh: Fix some exports
xinit: Use multiple conkys
xinit: Use xrandr for screens
xinit: Use RSSOwl
Emacs: Don't wrap lines
Emacs: Change font to Anonymous Pro
Emacs: Fix indentation in JS and CSS modes
Emacs: Add replace-last-sexp function
Emacs: Fix evil, nrepl compatibility