adding notification mailer and spec
Merge branch 'devel' of github.com:18F/myusa-server into feature/mail-branding
Merge branch 'feature/logo_url' of github.com:18F/myusa-server into feature/mail-branding
updating logo url name
constraining image to 60px
Merge branch 'devel' of github.com:18F/myusa-server into feature/mail-branding

Conflicts:
	app/views/doorkeeper/applications/_form.html.erb
- Removing css comments
- Adding integration test
- Changing alt tag
Merge branch 'devel' of github.com:18F/myusa-server into feature/mail-branding
fixing alt tags
css changes for mailer
Merge branch 'devel' of github.com:18F/myusa-server into feature/mail-branding
Merge pull request #356 from 18F/feature/mail-branding

Feature/mail branding