Fixed issue with unselecting all namespace facets

When namespace facet was unselected, not all selected namespace facets
where unselected because the default namespaces were selected again. Added
Flad to prevent this behaviour

Removed encoding flag from uri builder

Change-Id: I0dc398c9237ec68b7e568ee88e74a2930190d70a
Merge "Fixed issue with unselecting all namespace facets"