normalize english locales for themes

config/locales/en.yml

@@ -1803,20 +1803,20 @@ en:
   tags:
     does_not_match_previous_name: does not match the previous name
   themes:
+    chillstep: radtown (Chillstep)
     contrast: Mastodon (High contrast)
     default: Mastodon (Dark)
-    mastodon-light: Mastodon (Light)
-    mastodon-autumn: notalive (Autumn)
-    mastodon-winter: notalive (Winter)
-    mastodon-spring: notalive (Spring)
-    mastodon-summer: notalive (Summer)
-    mastodon-34: notalive (34)
-    mastodon-black: notalive (Black)
-    synthwave: radtown (Synthwave)
-    chillstep: radtown (Chillstep) 
     demogorgon: radtown (Demogorgon)
     dx7: radtown (DX7)
+    mastodon-34: notalive (34)
+    mastodon-autumn: notalive (Autumn)
+    mastodon-black: notalive (Black)
+    mastodon-light: Mastodon (Light)
+    mastodon-spring: notalive (Spring)
+    mastodon-summer: notalive (Summer)
+    mastodon-winter: notalive (Winter)
     nzws: nzwsme (nzws)
+    synthwave: radtown (Synthwave)
     system: Automatic (use system theme)
   time:
     formats: