#117 changed general information of AdditonalMetaDataPanel
 #117 check if start date is before end date
 #117 removed backslashes and typos from the wizard Bundle.properties
 #117 modified isValid() of RepresentationsPanel

In the advanced profile at least one representation must be selected to
enable the Next button. In any profile there must be at least one
representation to switch to the next panel.
 #117 added a tab which shows the relationship

The resource renderer got a tab which shows the provenance relationship.
The relationship is only once loaded when the tab is opened.
Merge branch 'feature/117-minor-enhancements' into dev