Merge pull request #507 from sharetribe/mailview-factories

Refactor Factories for better usage for Mailview (Factories won't write to DB anymore)
Fixed a broken link to license file
Update license copyright years
has_many with count
Link colors
Remove some hard-coded colors
Get rid of gradient button
Remove deprecated PersonMailer.deliver_community_updates
Use premailer in all mails
Messages and participations
Disable message and participants for now
Fix tests
has_many admins
Add custom color to community
admin escrow canceled
All mailviews working
Test data for emails
Improvements
Fix the rest mails