add quarantine videos feature (#1637)

* add quarantine videos feature

* increase Notification settings test timeout

to 20000ms. was completing 7000 locally but timing out
after 10000 on travis

* fix quarantine video test issues

-propagate misspelling
-remove skip from server/tests/client.ts

* WIP use blacklist for moderator video approval

instead of video.quarantine boolean

* finish auto-blacklist feature

shared/models/server/custom-config.model.ts

@@ -77,4 +77,13 @@ export interface CustomConfig {
       }
     }
   }
+
+  autoBlacklist: {
+    videos: {
+      ofUsers: {
+        enabled: boolean
+      }
+    }
+  }
+
 }