Fixed log message
Converted #last_24_hours to method to try to fix intermittently failing test
Added admin/message controller

Relates to gh-64.
Added Message model

Relates to gh-64.
Ignore screenplay stuff
Added .reegular_emails for the admin messager

Relates to gh-64.
Added mailer for emailing regular users

Relates to gh-64.
Use the email css

Relates to gh-64.
Specs for mailer views

Relates to gh-64.
#regular_emails include admin == nil

Relates to gh-64.
Admin sidebar links to Email users page

Relates to gh-64.
Added view for message

Closes gh-64.