Add alias for 'git fetch --all --prune'

This is to save me from typing git fa --prune all the time
Add chruby support.
Remove pcd command
Refactor some git aliases

The reason behind this refactor is so that git autocompletions
continue to work with the aliases. Gary Bernhardt's way would break
autocompleation.
Remove chruby's auto.sh

I think this was a bad idea for my setup. I don't often use multiple
rubies and this causes problems with tmux.
Only show 20 commits of history with `git r`
switch from pangloss to jelera
prevent syntastic from being too noisy in ember apps
remove this silly library
replace pangloss with jelera

There are some weird things going on in the syntax file with pangloss,
choosing to switch to jelera for the time present
Merge branch 'fishbowl'

Conflicts:
	.bashrc.d/30-load-ruby-path
	.vim/polka.bundle
	bin/setup-gitconfig