Issue #2324945 by andypost: Fixed clean-up @todo after 2155635.
Issue #2322933 by Xano: Fixed Module list form fatals due to incorrect route configuration.
Issue #2315333 by tim.plunkett: Move block plugin code out of block.module.
Issue #2321341 by blueminds: Fixed EntityAccessControlHandler::createAccess() does not pass into the hooks the entity bundle.
Issue #2322809 by chx, dawehner, tim.plunkett: Tighten routing security by access checking in matchRequest.
Issue #2228093 by dawehner | sun: Modernize theme initialization.
Issue #2324783 by JayeshSolanki | andypost: Fixed CommentLinkBuilderTest::setUp() should be protected.
Issue #2325385 by dawehner: Fixed Ensure that the error handler does not throw exception itself.