[apps] Apps are not allocated on the heap anymore but in a union hold by

the AppsContainerStorage

apps/apps_container_storage.h

@@ -13,7 +13,18 @@ public:
   AppsContainerStorage();
   int numberOfApps() override;
   App::Snapshot * appSnapshotAtIndex(int index) override;
+  void * currentAppBuffer() override { return &m_apps; };
 private:
+  union Apps {
+  public:
+    /* Enforce a trivial constructor and destructor that just leave the memory
+     * unmodified. This way, m_apps can be trivially destructed. */
+    Apps() {};
+    ~Apps() {};
+  private:
+    APPS_CONTAINER_APPS_DECLARATION
+  };
+  Apps m_apps;
   APPS_CONTAINER_SNAPSHOT_DECLARATIONS
 };