Update project list in the header bar.

Use function for clean cache (from openstack_auth), after project
members were changed(for project cache is invalidated).
Now, in the header bar, show only active projects.

Change-Id: Ia2561b591b4f3de29a14aaa4b666b16fc1d4cec8
Closes-Bug: #1393659
Merge "Update project list in the header bar."