privacy guard: allow as well image resources for light background

allow to fetch icons which fit on light background if needed. (Settings eg and
later other security features)

Change-Id: I6445bf0fc1a05718af01d83e29fc6d01b8f11c6c
fix resource naming derp

sorry

Change-Id: Ib9c120c1400840881c6122fbe99eea619cb6b7fb