Apply status filter on resources

[MrOrz]

This PR is part of user blocking mechanism M3: https://g0v.hackmd.io/hk1v8Ka5TCmIZinQ6zKU9Q#M3-remove-blocked-reply-requests-from-sight-

• Use statuses to filter all listings of ArticleReply, ArticleCategory, ArticleReplyFeedback, ReplyRequest.
  • Users can use {GetArticle { replyRequests(statuses: [BLOCKED]) }}, ListReplyRequests(filter: {statuses: NORMAL}) {...} to get blocked reply requests
  • The same goes for ArticleReply, ArticleCategory, ArticleReplyFeedback
• Add or update the enum status to ArticleReply, ArticleCategory, ArticleReplyFeedback, ReplyRequest according to schema change

Breaking changes

This PR introduces breaking changes:

• Article & Reply object type's articleReplies field will no longer list out article-reply connections with status being DELETED and BLOCKED by default.
• Article object type's replyRequests field, and ListReplyRequests API will no longer list out reply requsts with status being BLOCKED by default.
• Article object type's articleCategories field will no longer list out article categories with status being BLOCKED by default.
• ArticleReply object type's feedbacks field, and ListArticleReplyFeedbacks API will no longer list out feedbacks with status being BLOCKED by default.

[coveralls]

Coverage decreased (-0.1%) to 87.045% when pulling 3bf6786c5a845664cbe4f0e620896838ea8e0221 on block-user into d179385cd717f05a2f2a3123858d2d6c20940efe on master.