userportal: Put model bindings into UiCommonModule

This patch puts UiCommon model bindings right
next to corresponding model provider bindings.

If we'd like to split these bindings, the split
should be done per-function similar to WebAdmin,
i.e. "template" module, "resource" module etc.

Change-Id: Ib6ae77c8083f44ee4fba19d7f3cb3c0af043d452
Signed-off-by: Vojtech Szocs <vszocs@redhat.com>