Add Chinwag's extra theme options, updated mastodon_light

config/locales/en.yml

@@ -735,7 +735,10 @@ en:
       <p>Originally adapted from the <a href="https://github.com/discourse/discourse">Discourse privacy policy</a>.</p>
     title: "%{instance} Terms of Service and Privacy Policy"
   themes:
-    default: Mastodon
+    default: Chinwag
+    light: Mastodon Light
+    mastodon: Mastodon Default
+    testing: Testing
   time:
     formats:
       default: "%b %d, %Y, %H:%M"

config/themes.yml

@@ -1 +1,4 @@
-default: styles/application.scss
+default: styles/chinwag.scss
+light: styles/mastodon_light.scss
+mastodon: styles/application.scss
+testing: styles/chinwag_light.scss