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/users/user-notification.model.ts

@@ -13,7 +13,9 @@ export enum UserNotificationType {
 
   NEW_USER_REGISTRATION = 9,
   NEW_FOLLOW = 10,
-  COMMENT_MENTION = 11
+  COMMENT_MENTION = 11,
+
+  VIDEO_AUTO_BLACKLIST_FOR_MODERATORS = 12
 }
 
 export interface VideoInfo {