FLUID-5314: Fixed styling of transition to hidden panel.
- Fixed the styling so that the collapsing transition is not seen
behind the star button.
Merge branch 'FLUID-5299' into FLUID-5341

Conflicts:
	src/components/overviewPanel/css/OverviewPanel.css
FLUID-5314: Removed empty rule.
Merge branch 'FLUID-5299' into FLUID-5341

Conflicts:
	src/components/overviewPanel/css/OverviewPanel.css