Added email sending service to the ui stests, part of #66
Possibility to chech whether an email for a given address is scheduled, part of #66
Storing email service in context for future reuse, part of #66

This was needed in order to gain access to email service in tests.
Added missing param to template conf
Removed obsolete import
Turning on in memory storage for tests, part of #66
Tweaks to make register test pass, part of #66