changed the rendering of mail messages
Merge commit 'ba8f6f5ff29f6f99b90eba0b8ce8b3649abe41e0'

# Via Nicole Rauch
* commit 'ba8f6f5ff29f6f99b90eba0b8ce8b3649abe41e0':
Changed the way invitation emails are rendered
changed the layout of the registration area in activities
missed some ‚default‘ resources
Merge pull request #487 from leider/master

layout changes for multiple resources in activities