See D20650. Long ago, this got added as "pastebin", but that's the name of another product/company, not a generic term for paste storage.
Rename the database to phabricator_paste.
(An alternate version of this patch would rename phabricator_search to phabricator_bing, phabricator_countdown to phabricator_spacex, phabricator_pholio to phabricator_adobe_photoshop, etc.)