Use string equality instead of substring search to check for mandatory fields.
eg. 'atom:authorblahblah' should not be accepted when we expect 'atom:author'
Issue found while working on T2871.
Migrated from D4714 (view on Phabricator)
Staging instance, all changes can be removed at any time
eg. 'atom:authorblahblah' should not be accepted when we expect 'atom:author'
Issue found while working on T2871.
Migrated from D4714 (view on Phabricator)