diff 8.x-1.0-rc2

Another RC after a bunch of bugfixes.

Most important change is that we removed the automated summary generation on the Revisions tab. It caused performance regressions and wasn't as useful as expected. We need a better approach for that goal.

Changes since 8.x-1.0-rc1:

• #2854581 by mtodor: Cleanup default configuration
• #2935222 by jhedstrom, namrata.honnavar, kevin.dutra: Revision overview can be empty when node grants modules are enabled
• #2880936 by marcoscano, Josh Waihi, miro_dietiker, Berdir: Remove runtime generated summary: Diff overhead on revisions gets exponential
• #2890116 by jhedstrom: Display content moderation state change on diff overview form
• #2893465 by bapi_22: Removed deprecated method/Class calls from code base
• #2902258 by hchonov, andreasderijcke: Revision url route for entity types different than the node is wrong
• #2878544 by dylancompanjen: HTML tag closing and opening mistakes
• #2887598 by jhedstrom, toncic: Fix test failing