Hide unactive on explore users and some refactors (#2741)

* hide unactive on explore users and some refactors

* fix test for removed Organizations

* fix test for removed Organizations

* fix imports

* fix logic bug

* refactor the toConds

* Rename TestOrganizations to TestSearchUsers and add tests for users

* fix other tests

* fix other tests

* fix watchers tests

* fix comments and remove unused code

models/fixtures/issue_watch.yml

@@ -1,6 +1,6 @@
 -
   id: 1
-  user_id: 1
+  user_id: 9
   issue_id: 1
   is_watching: true
   created_unix: 946684800