Add processing of the validate link

* TODO: tidy the UI
email: wip add email user when added to project

* unit test should check to see the user and admin are the right way around in the email
* link to the project they have been added to needs work/verifying
Merge branch 'feature/email'

Conflicts:
	.gitignore
	src/libraries/sfchecks/Email.php
	test/php/email/Template_Test.php