added output from broadcast_format to broadcast show
added default header picture
Merge branch 'master' into add-functionality-to-broadcast-pages
Merge branch 'master' into add-functionality-to-broadcast-pages
added additional broadcast attributes
Merge branch 'master' into add-functionality-to-broadcast-pages
added copyright
fixed bug in submenue, fixed output.
deactived scope of broadcast formats temporary and email validation
improved templates of braodcast format
Merge pull request #251 from koelncampus/add-functionality-to-broadcast-pages

[WIP] Show broadcast, broadcast_format and broadcast_type infos in broadcast->show