Fixes #8113 - Docker tags count now displayed for Repositories

Content unit counts will now also show information on Docker Tags
fixes #7697 - enable searching by CVE
Merge pull request #4772 from parthaa/docker-tags

Fixes #8113 - Docker Tags now displayed in the UI
Merge pull request #4836 from stbenjam/7697

fixes #7697 - enable searching by CVE