Merge branch 'feature/application-xml-mime' into 'develop'

config: add application/xml mimetype support.

See merge request pleroma/pleroma!228

config/config.exs

@@ -26,6 +26,7 @@ config :logger, :console,
   metadata: [:request_id]
 
 config :mime, :types, %{
+  "application/xml" => ["xml"],
   "application/xrd+xml" => ["xrd+xml"],
   "application/activity+json" => ["activity+json"],
   "application/ld+json" => ["activity+json"]