Content Search: Show package details

Showing package info in content search as legacy path removal will make viewing
package info impossible in the UI.
953444 - Fixed perm related to cv and systems

Modified the System.registrable call now to check
for permissions on the content views getting updated
before it actually gets subscribed to the system.
Added a few unit tests to deal with that.

Also in the process fixed controller_support test to
check for tags.
Merge pull request #2283 from parthaa/953444

953444 - Fixed perm related to cv and systems
Nutupane: fix scrolling after closing the create new dialog.
Merge pull request #2311 from waldenraines/nutupane_modal

Nutupane: fix scrolling after closing the create new dialog.
Merge pull request #2294 from daviddavis/package-info

Adding package info