+ client_application:
+ name: Name (Required)
+ url: Main Application URL (Required)
+ callback_url: Callback URL
+ support_url: Support URL
+ allow_read_prefs: read their user preferences
+ allow_write_prefs: modify their user preferences
+ allow_write_diary: create diary entries, comments and make friends
+ allow_write_api: modify the map
+ allow_read_gpx: read their private GPS traces
+ allow_write_gpx: upload GPS traces
+ allow_write_notes: modify notes