Added Xtext and XTend to the p2 director

The setup can now be deployed on non dsl based oomph installations (The
RCP installation for example) It will pull in xtext and xtend into the
installation

Jnario.setup

@@ -42,6 +42,14 @@
       storageURI="scope://Workspace"/>
   <setupTask
       xsi:type="setup.p2:P2Task">
+    <requirement
+        name="org.eclipse.xtend.sdk.feature.group"/>
+    <requirement
+        name="org.eclipse.xtext.sdk.feature.group"/>
+    <repository
+        url="http://download.eclipse.org/releases/neon"/>
+    <repository
+        url="http://download.eclipse.org/modeling/tmf/xtext/updates/composite/milestones/"/>
     <description>Install the tools needed in the IDE to work with the source code for ${scope.project.label}</description>
   </setupTask>
   <setupTask