fix bug on issue view when not login (#1624)

* fix bug on issue view when not login

* hide issue watch when not login

* update the tests

* fix test on issue

models/fixtures/repo_unit.yml

@@ -0,0 +1,15 @@
+-
+  id: 1
+  repo_id: 1
+  type: 1
+  index: 0
+  config: "{}"
+  created_unix: 946684810
+
+-
+  id: 2
+  repo_id: 1
+  type: 2
+  index: 0
+  config: "{}"
+  created_unix: 946684810