mod_http_oauth2: Allow omitting application type for native apps This derives "application_type":"native" from the first redirect URI when registering a client, so that it can be omitted without the default value of "web" causing the very same redirect URIs to be rejected.

This module produces more detailed HTTP logs for Prosodys built-in HTTP
server. The format is similar to that of Apache and go into Prosodys
normal logs at the `info` level.