Fixes #8238 : Mark content_type parameter as required, since it is for POSTS
Merge pull request #4792 from bkearney/bkearney/8238

Fixes #8238 : Mark content_type parameter as required, since it is for P...
Fixes #8397: Display errata counts for Library environment counts.
Merge pull request #4812 from ehelms/fixes-8397

Fixes #8397: Display errata counts for Library environment counts.
Fixes #8222 - Prevent duplicate docker tags for repos
Fixes #7883: Allow filtering content by a content view version and repository.
Merge pull request #4791 from daviddavis/temp/20141031135736

Fixes #8222 - Prevent duplicate docker tags for repos
Merge pull request #4795 from ehelms/fixes-7883

Fixes #7883: Allow filtering content by a content view version and repos...
Fixes #8406: Allow content to be filtered by environment.