Resolve "Refactorings/Clean-Up"

Closes #39 (closed)

ragconnect.base/src/main/jastadd/Navigation.jrag

@@ -136,6 +136,9 @@ aspect RagConnectNavigation {
 //    return containedFile().getFileName();
   }
 
+  // --- isFirstInList ---
+  inh boolean DependencyDefinition.isFirstInList();
+  eq ConnectSpecification.getDependencyDefinition(int index).isFirstInList() = index == 0;
 
   //--- givenPortTargetList ---
   syn List<PortTarget> RagConnect.givenPortTargetList() {