[ECommons-UI] Enhanced content element filters

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[ECommons-UI] Added support to iterate in quick information popups

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>
[MPBV] Fixed NPE when creating of new pages in E 4.4

Signed-off-by: Stephan Wahlbrink <sw@wahlbrink.eu>