Fixes 6807/bz1103033 - Host Collection UI rows refresh code

Previously the content host counts in the rows of host collection index table
would not get updated. So for example if the host collection had 5 CH's and 6 th on got added
the updated CH count would not get reflected in the Host Collection index page. This
commit fixes that
Merge pull request #4496 from parthaa/host-collection-fix

Fixes 6807/bz1103033 - Host Collection UI rows refresh code