first try to generate messages from events

todo:

- add subject function to Event interface
- implement interface on derived event classes
- make events translatable

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

core/src/main/java/de/srsoftware/umbrella/core/model/WikiPage.java

@@ -153,6 +153,11 @@ public class WikiPage implements Mappable {
 		);
 	}
 
+	@Override
+	public String toString() {
+		return title;
+	}
+
 	public int version(){
 		return version;
 	}