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

Conflicts:
- config/locales/en.yml
  Conflict caused by the glitch-soc-specific “flavour” string being too close
  to the newly introduced “identity_proofs” string. Just included both.

app/helpers/settings_helper.rb

@@ -6,6 +6,7 @@ module SettingsHelper
     ar: 'العربية',
     ast: 'Asturianu',
     bg: 'Български',
+    bn: 'বাংলা',
     ca: 'Català',
     co: 'Corsu',
     cs: 'Čeština',
@@ -19,8 +20,10 @@ module SettingsHelper
     fa: 'فارسی',
     fi: 'Suomi',
     fr: 'Français',
+    ga: 'Gaeilge',
     gl: 'Galego',
     he: 'עברית',
+    hi: 'हिन्दी',
     hr: 'Hrvatski',
     hu: 'Magyar',
     hy: 'Հայերեն',