1.6.0-rc2

What's Changed

• 1.6.0-rc1 by @Gailbear in #446
• PLAN-553 - draft approvals backend support by @balen in #447
• PLAN-590 change content of visibility col by @balen in #448
• Plan 574 approval cols by @balen in #449
• The view tries to display before the enum is loaded need a test to ch… by @balen in #450
• 1.6 rbac by @balen in #451
• Plan 591 change operator by @balen in #452
• fix for particpants by @balen in #453
• Some tweaks to draft/firm schedules by @Gailbear in #454
• plan-594 fix approval queries by @balen in #455
• plan-594 fix snapshot queries by @balen in #458

Full Changelog: v1.6.0-rc1...v1.6.0-rc2