Resolves #26 Entity view page

lib/utils.class.dart

@@ -63,4 +63,10 @@ class ServiceCallEvent {
   Map<String, String> additionalParams;
 
   ServiceCallEvent(this.domain, this.service, this.entityId, this.additionalParams);
+}
+
+class ShowEntityPageEvent {
+  Entity entity;
+
+  ShowEntityPageEvent(this.entity);
 }