Add some tricks to the completion system

Add _dzen2 complete from zsh-users

Remove _pulseaudio as it's merged upstream
Swap out dircolors with a fresh one

Source https://raw.github.com/trapd00r/LS_COLORS/
Change editor variables
Clean up and fix keybindings
Document all options, add extras mostly doing history
Add aliases for using vim as pager/cat/less

Readd mplayer aliases

ta -> tmux attax for colargol
Reorder fpath before completions

Add places to cdpath[] and make it unique
Fix zlogin for colargol