Bug 305586 [Model] Model tweaking round 3

examples/org.eclipse.e4.demo.e4photo/Application.e4xmi

diff --git a/examples/org.eclipse.e4.demo.e4photo/Application.e4xmi b/examples/org.eclipse.e4.demo.e4photo/Application.e4xmi
index b21a642..bd45b4a 100644
--- a/examples/org.eclipse.e4.demo.e4photo/Application.e4xmi
+++ b/examples/org.eclipse.e4.demo.e4photo/Application.e4xmi
@@ -25,6 +25,8 @@
         <children xsi:type="advanced:Placeholder" xmi:id="_A3JFAElhEd-gnfb0CEj9-g" elementId="_A3JFAElhEd-gnfb0CEj9-g" ref="_hKibQEleEd-TVO58rzJVgA"/>
       </children>
     </children>
+    <variables>selection</variables>
+    <variables>input</variables>
     <mainMenu xmi:id="_9rNPkUjTEd-v7fhjaiz65w" elementId="_9rNPkUjTEd-v7fhjaiz65w">
       <children xsi:type="menu:Menu" xmi:id="_E5HnwEjUEd-v7fhjaiz65w" elementId="org.eclipse.e4.ide.app.menu.file" label="File">
         <children xsi:type="menu:HandledMenuItem" xmi:id="_IHQXsEjUEd-v7fhjaiz65w" elementId="_IHQXsEjUEd-v7fhjaiz65w" label="Create Album" command="_zQSFoEjPEd-XR9_8rlW1bQ"/>

tests/org.eclipse.e4.ui.tests/xmi/photo.e4xmi

diff --git a/tests/org.eclipse.e4.ui.tests/xmi/photo.e4xmi b/tests/org.eclipse.e4.ui.tests/xmi/photo.e4xmi
index b21a642..bd45b4a 100644
--- a/tests/org.eclipse.e4.ui.tests/xmi/photo.e4xmi
+++ b/tests/org.eclipse.e4.ui.tests/xmi/photo.e4xmi
@@ -25,6 +25,8 @@
         <children xsi:type="advanced:Placeholder" xmi:id="_A3JFAElhEd-gnfb0CEj9-g" elementId="_A3JFAElhEd-gnfb0CEj9-g" ref="_hKibQEleEd-TVO58rzJVgA"/>
       </children>
     </children>
+    <variables>selection</variables>
+    <variables>input</variables>
     <mainMenu xmi:id="_9rNPkUjTEd-v7fhjaiz65w" elementId="_9rNPkUjTEd-v7fhjaiz65w">
       <children xsi:type="menu:Menu" xmi:id="_E5HnwEjUEd-v7fhjaiz65w" elementId="org.eclipse.e4.ide.app.menu.file" label="File">
         <children xsi:type="menu:HandledMenuItem" xmi:id="_IHQXsEjUEd-v7fhjaiz65w" elementId="_IHQXsEjUEd-v7fhjaiz65w" label="Create Album" command="_zQSFoEjPEd-XR9_8rlW1bQ"/>