reindent email status partial
use Cart->Approval relation methods
smarter choice of data for mailer previews
consolidate cart factories
move webflow styles to separate file
Merge remote-tracking branch 'origin/master' into 81528610_approval_states

Conflicts:
	app/views/shared/_email_status.html.erb
remove EmailStatusReport

functionality already exists within the CartDecorator
move mailer templates out of views/shared
move all the email status styles to a dedicated file
make status email css match DOM order
fix mail preview

(cherry picked from commit 18ea0bb1dd921ef8fd8c53c7adbed0c5ed0a3eb9)
Merge pull request #117 from 18F/email-cleanup

random email cleanup