Adding mail plugin
Adding travis and coverall modifications for the new app mailit
basic structure of the mailing plugin
Basics of sending an email
Adding message Record migration
Sending email with template in subject and content
Sending emails from default_from_email and to only those who have an email address
adding forgotten migrations
Merge pull request #37 from ciudadanointeligente/mail_plugin

Mail plugin closes #25, #26, #27, #28