Handle error if email not correct
Send Favorites / start on email validation
DDBNEXT-485: email design in progress
DDBNEXT-485: Favorites list email basic design finished
DDBNEXT-485: minor design issues fixed
Merge branch 'DDBNEXT-485-email-rendering' into develop

Conflicts:
	grails-app/i18n/messages.properties
	grails-app/i18n/messages_de.properties