Avoid error when no datasync profiles configured

at least, according to the web app none are configured..but they may
be in another config file

tailbone/views/datasync.py

@@ -97,7 +97,12 @@ class DataSyncThreadView(MasterView):
             process_info = None
             supervisor_error = simple_error(error)
 
-        profiles = self.datasync_handler.get_configured_profiles()
+        try:
+            profiles = self.datasync_handler.get_configured_profiles()
+        except Exception as error:
+            log.warning("could not load profiles!", exc_info=True)
+            self.request.session.flash(simple_error(error), 'error')
+            profiles = {}
 
         sql = """
         select source, consumer, count(*) as changes