Description of problem:
In Snapshots when I click on some snapshot it seems that nothing happens because the background stays grey, only other selected VM goes white. When I move the mouse away the snapshots gets light blue. So when I stay in snapshot box and do some expands of subtabs I still don't know that it is selected. That's a little bit confusing.

Version-Release number of selected component (if applicable):
ovirt-engine-webadmin-portal-4.2.0-0.0.master.20170808202742.git7c42951.el7.centos.noarch

How reproducible: always


Steps to Reproduce:
1. go to VM detail -> Snapshots with more than one snapshot
2. move mouse over snapshot other than actually selected (mostly Active VM)
3. click on the snapshot

Actual results: mouse hover changes background to grey and after clicking it stays so


Expected results: selected snapshot has always light blue background