fixes #5800 - host collections ui - errors on add/remove should be displayed
Merge pull request #4153 from bbuckingham/issue-5800

fixes #5800 - host collections ui - errors on add/remove should be displayed
Fixes #5940/BZ1080361, show loading indicator for content view versions.
Merge pull request #4157 from waldenraines/5940

Fixes #5940/BZ1080361, show loading indicator for content view versions.