[#83673882] Fixed image links
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
Handle green traits that are only keys
Updated specs and fixed a bad one
Fix broken spec: ignore array order
Merge remote-tracking branch 'origin/master' into 81528610_approval_states
remove references to travis
Merge pull request #119 from 18F/no-travis

remove references to Travis
use roadie-rails instead of roadie
upgrade gems
go back to fetching omniauth-myusa over https
more email status styling
better spacing of approval list