Fixes #8238 : Mark content_type parameter as required, since it is for POSTS
Fixes #8263: Remove usage of to_sym on user input params.

Addresses CVE-2014-3712, whereby two locations in the code turn user
input into symbols and allow potential DoS attacks by an authenticated user.

The first location, content search params, was turned from symbol matching
into string matching to avoid the to_sym conversion. The second location
involves the use of the Rails action param. While this should be guarded
by the internals of Rails, the code was changed to only perform the to_sym
if the params[:action] parameter exists within the application by doing
the respond_to? check prior to the to_sym in the send.
Fixes #8237 : Validate that the user can not set max_content_hosts if unlimited_content_hosts is true
Fixes #8338: add CVE numbers to errata details.

http://projects.theforeman.org/issues/8338
Merge pull request #4802 from ehelms/fixes-8263

Fixes #8263: Remove usage of to_sym on user input params.
fixes #8355 - remove ambigious column plucks for older rails
Merge pull request #4809 from waldenraines/8338

Fixes #8338: add CVE numbers to errata details.
Merge pull request #4810 from stbenjam/8355

fixes #8355 - remove ambigious column plucks for older rails
Merge pull request #4792 from bkearney/bkearney/8238

Fixes #8238 : Mark content_type parameter as required, since it is for P...
Fixes #5059 - Returns error message when sorting by wrong column.
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...
Refs #7883: Adds repository filter to tabs on content view version details.

This adds the ability to filter the package, errata and package group list
for a content view version by repository.
Merge pull request #4796 from ehelms/refs-7883

Refs #7883: Adds repository filter to tabs on content view version detai...
Merge pull request #4669 from adamruzicka/sort-by-fix

Fixes #5059 - Returns error message when sorting by wrong column
Refs #8396: Remove use of 'alchemy' namespace from Bastion re-facotring.