Harden content drafts and force-disable drafts when coupled with workbench_moderation.

Kristen Pol → credited ivrh → .

Kristen Pol → credited steveworley → .

Kristen Pol → credited stooit → .

This code was merged in GitHub and synced with d.o repo

Automatically closed - issue fixed for 2 weeks with no activity.

Part of 1.6.0 release → .