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

Conflicts:
- `app/controllers/api/v1/statuses_controller.rb`:
  Conflict due to upstream adding a new parameter (with_rate_limit),
  too close to glitch-soc's own additional parameter (content_type).
  Added upstream's parameter.
- `app/services/post_status_service.rb`:
  Conflict due to upstream adding a new parameter (rate_limit),
  too close to glitch-soc's own additional parameter (content_type).
  Added upstream's parameter.
- `app/views/settings/preferences/appearance/show.html.haml`:
  Conflict due to us not exposing theme settings here (as we have
  a different flavour/skin menu).
  Took upstream change, while still not exposing theme settings.
- `config/webpack/shared.js`:
  Coding style fixes for a part we have rewritten.
  Discarded upstream changes.

Gemfile.lock

@@ -195,7 +195,7 @@ GEM
     docile (1.3.2)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    doorkeeper (5.2.3)
+    doorkeeper (5.3.1)
       railties (>= 5)
     dotenv (2.7.5)
     dotenv-rails (2.7.5)
@@ -311,7 +311,7 @@ GEM
       multi_json (~> 1.14)
       rack (~> 2.0)
       rdf (~> 3.1)
-    json-ld-preloaded (3.1.0)
+    json-ld-preloaded (3.1.1)
       json-ld (~> 3.1)
       rdf (~> 3.1)
     jsonapi-renderer (0.2.2)
@@ -383,7 +383,7 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
       sidekiq (>= 3.5)
       statsd-ruby (~> 1.4, >= 1.4.0)
-    oj (3.10.1)
+    oj (3.10.3)
     omniauth (1.9.0)
       hashie (>= 3.4.6, < 3.7.0)
       rack (>= 1.6.2, < 3)
@@ -603,7 +603,7 @@ GEM
     stoplight (2.2.0)
     streamio-ffmpeg (3.0.2)
       multi_json (~> 1.8)
-    strong_migrations (0.5.1)
+    strong_migrations (0.6.2)
       activerecord (>= 5)
     temple (0.8.2)
     terminal-table (1.8.0)
@@ -690,7 +690,7 @@ DEPENDENCIES
   devise-two-factor (~> 3.1)
   devise_pam_authenticatable2 (~> 9.2)
   discard (~> 1.1)
-  doorkeeper (~> 5.2)
+  doorkeeper (~> 5.3)
   dotenv-rails (~> 2.7)
   e2mmap (~> 0.1.0)
   fabrication (~> 2.21)
@@ -779,7 +779,7 @@ DEPENDENCIES
   stackprof
   stoplight (~> 2.2.0)
   streamio-ffmpeg (~> 3.0)
-  strong_migrations (~> 0.5)
+  strong_migrations (~> 0.6)
   thor (~> 0.20)
   thwait (~> 0.1.0)
   tty-command (~> 0.9)