mgr/dashboard: fix rgw inventory card and broken shadows

mgr/dashboard: fix rgw inventory card and broken shadows

Mess up of the dashboard landing page layout fixes PR

Fixes: http://tracker.ceph.com/issues/62961
Signed-off-by: Nizamudeen A <nia@redhat.com>
(cherry picked from commit 4c6c5787cb338995955b4a30fed9c348337e721c)

 Conflicts:
	src/pybind/mgr/dashboard/frontend/src/app/ceph/rgw/rgw-overview-dashboard/rgw-overview-dashboard.component.html
  - Accept incoming changes
	src/pybind/mgr/dashboard/frontend/src/app/shared/components/card-row/card-row.component.html
  - Accept incoming changes