Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- .eslintrc.yml
  Removed, as upstream removed it.
- app/controllers/admin/statuses_controller.rb
  Minor code cleanup when porting one of our features.
- app/models/account.rb
  Note length validation has changed upstream.
  We now use upstream's validation (dropped legacy glitch-soc
  account metadata stuff) but with configurable limit.
- app/services/post_status_service.rb
  Upstream has added support for scheduled toots, refactoring
  the code a bit. Adapted our changes to this refactoring.
- app/views/stream_entries/_detailed_status.html.haml
  Not a real conflict, changes too close.
- app/views/stream_entries/_simple_status.html.haml
  Not a real conflict, changes too close.

yarn.lock

@@ -7632,10 +7632,10 @@ react-overlays@^0.8.3:
     react-transition-group "^2.2.0"
     warning "^3.0.0"
 
-react-redux-loading-bar@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/react-redux-loading-bar/-/react-redux-loading-bar-4.1.0.tgz#3ca460569d979450d9d1dc992328efa449c10a7a"
-  integrity sha512-9L51ZvPqnlPs97j44FZLio6maQ/2BMP8xXFPArDWxByyLyGYs2fXpSZw+Lby9qr8Px3SsH9dylfC8HfQrmc/Mw==
+react-redux-loading-bar@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/react-redux-loading-bar/-/react-redux-loading-bar-4.0.8.tgz#e84d59d1517b79f53b0f39c8ddb40682af648c1b"
+  integrity sha512-BpR1tlYrYKFtGhxa7nAKc0dpcV33ZgXJ/jKNLpDDaxu2/cCxbkWQt9YlWT+VLw1x/7qyNYY4DH48bZdtmciSpg==
   dependencies:
     prop-types "^15.6.2"
     react-lifecycles-compat "^3.0.2"