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

Conflicts:
- app/javascript/mastodon/features/compose/components/compose_form.js
  Upstream cleaned up a bit, including on lines in which
  we replaced the hardcoded 500 character limit with a maxChar
  constant. Applied the changes while keeping maxChar instead of 500.
- app/javascript/packs/public.js
  Moved upstream's new animated avatar hover handling in
  app/javascript/core/public.js
- app/javascript/styles/fonts/montserrat.scss
  Upstream fixed local font name, applied those changes.
- app/javascript/styles/fonts/roboto.scss
  Upstream fixed local font name, applied those changes.
- lib/mastodon/version.rb
  Upstream made repo URL configurable, did the same, but
  default to glitch-soc

app/views/accounts/_header.html.haml

@@ -3,7 +3,7 @@
     = image_tag (current_account&.user&.setting_auto_play_gif ? account.header_original_url : account.header_static_url), class: 'parallax'
   .public-account-header__bar
     = link_to short_account_url(account), class: 'avatar' do
-      = image_tag (current_account&.user&.setting_auto_play_gif ? account.avatar_original_url : account.avatar_static_url)
+      = image_tag (current_account&.user&.setting_auto_play_gif ? account.avatar_original_url : account.avatar_static_url), id: 'profile_page_avatar', data: {original: full_asset_url(account.avatar_original_url), static: full_asset_url(account.avatar_static_url), autoplay: current_account&.user&.setting_auto_play_gif}
     .public-account-header__tabs
       .public-account-header__tabs__name
         %h1