summary: mark title, displaytitle summary response fields deprecated
summary: mark title, displaytitle summary response fields deprecated

I mainly wanted to mark api_urls as deprecated but that field has not even been described in RESTBase.

milimetric/restbase,wikimedia/restbase,milimetric/restbase,wikimedia/mediawiki-services-restbase,wikimedia/restbase,Pchelolo/restbase,wikimedia/mediawiki-services-restbase,Pchelolo/restbase