first pass at styling the email status header
darker, thinner rule in email status
add new status icons from erica
use image url helpers for status icons
include the status icon in the header
fix mail preview
display approvals in order vertically
group approvals by status for parallel approvals
Merge remote-tracking branch 'origin/master' into 81528610_approval_states
more email status styling
better spacing of approval list
Merge remote-tracking branch 'origin/master' into 81528610_approval_states

Conflicts:
	app/assets/stylesheets/common/communicarts.css.scss
Merge pull request #121 from 18F/81528610_approval_states

[#81528610] approval states