Fixes #4610: Stop double submission of sync action on sync management.

Removes the inclusion of rails.js from the Katello javascript since
Foreman provides this JS library.
Fixes #6046/BZ1103317 - fix display of version on composite CV page.
Merge pull request #4259 from ehelms/fixes-4610

Fixes #4610: Stop double submission of sync action on sync management.
Merge pull request #4229 from waldenraines/6046

Fixes #6046/BZ1103317 - fix display of version on composite CV page.