preparing moving of locations

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

@@ -43,6 +43,11 @@ public class DbLocation extends Location {
 		return parentLocationId;
 	}
 
+	public DbLocation parent(DbLocation newParent) {
+		parentLocationId = newParent.id();
+		return this;
+	}
+
 	@Override
 	public DbLocation resolve() {
 		return this;