update sams_hub.py addApp + menu use _appList to pass test_main_app

sams_classes/sams_hub.py

@@ -25,6 +25,7 @@ class SAMSHub:
       raise TypeError(
         'Parameter config musst contain a value for "default_language"')
     self._apps = {}
+    self._appList = []
     self._flaskApp = Flask(name)
     self._flaskApp.context_processor(self._context_processor)
     self._flaskApp.secret_key = 'my awesome SAMSHub secret_key'
@@ -33,6 +34,7 @@ class SAMSHub:
     if not isinstance(app, SAMSApp):
       raise TypeError('Argument app has to be a SAMSApp.')
     self._apps[app.name] = app
+    self._appList.append(app)
     if app.name is self._config.get('main_app'):
       self._flaskApp.register_blueprint(app.blueprint)
     else:
@@ -75,7 +77,7 @@ class SAMSHub:
   
   def menu(self, langCode):
     menu = []
-    for app in self._apps.values():
+    for app in self._appList:
       if self._config.get('main_app') is app.name:
         menu.extend(app.menu(langCode = langCode))
       else: