* Refactor mailers
* Fixes for mailer
* Fixes for approving a quote
* Refactor emailer
* Refactor emailer
* Attach files with GMail transport
* Attach files to GMail transport
* Fixes for null values in custom values
* Refactor mailing
* Working on send emails from GMail API
* Fixes for tests
* Test for GMail
* Adjustments for storing oauth token
* Subclass Notification class
* Subclass Notification class
* Working on invoice design
* Working on page headers and footers
* Fixes for headers and footers
* Fixes for invoices
* Enable identifying a user who submits a report to sentry for tracking purposes
* Minor fix for setup page
* Fixes for Tests
* Fixes for tests
* Generic Entity Emailer
* Fixes for emailing a generic entity