Move the project index into the project class

tests/mock.py

@@ -29,7 +29,6 @@ class MockGuiMain():
     def __init__(self):
         self.mainConf = None
         self.hasProject = True
-        self.theIndex = None
         self.theProject = None
         self.statusBar = MockStatusBar()
 

tests/test_gui/test_gui_docviewer.py

@@ -47,8 +47,8 @@ def testGuiViewer_Main(qtbot, monkeypatch, nwGUI, nwLipsum):
 
     # Rebuild the index
     nwGUI.mainMenu.aRebuildIndex.activate(QAction.Trigger)
-    assert nwGUI.theIndex._tagIndex != {}
-    assert nwGUI.theIndex._refIndex != {}
+    assert nwGUI.theProject.index._tagIndex != {}
+    assert nwGUI.theProject.index._refIndex != {}
 
     # Select a document in the project tree
     nwGUI.treeView.setSelectedHandle("88243afbe5ed8")