Results: Message box where study version and results version are different.

src/Model/Status.py

@@ -90,8 +90,14 @@ class StudyStatus(object):
         logger.debug("model status set as saved")
         self._saved = True
 
+    def _set_as_not_saved(self):
+        self._saved = False
+
+    def _set_as_saved(self):
+        self._saved = True
+
     def modified(self):
         if self._saved:
             self.version += 1
 
-        self._saved = False
+        self._set_as_not_saved()