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

Conflicts:
- `app/javascript/mastodon/actions/compose.js`:
  Not a “real” conflict, but change too close to a change we made to
  fix the vanilla WebUI locally pushing authored local-only toots in the
  public TL view.

package.json

@@ -110,7 +110,7 @@
     "intl-relativeformat": "^6.4.3",
     "is-nan": "^1.3.0",
     "js-yaml": "^3.13.1",
-    "lodash": "^4.17.14",
+    "lodash": "^4.17.19",
     "mark-loader": "^0.1.6",
     "marky": "^1.2.1",
     "mini-css-extract-plugin": "^0.9.0",