Issue #2194783 by Berdir, vprocessor, andypost, Antonnavi, tim.plunkett, Crell, Mile23, catch: Rename EntityTypeInterface::isSubclassOf() to ::entityClassImplements()

Issue #2773197 by jalpesh, tstoeckler: DefaultHtmlRouteProviderTest::testGetCollectionRoute() has wrong @covers

Revert "Issue #2353611 by larowlan, dawehner, sime, alexpott, Wim Leers, tstoeckler: Make it possible to link to an entity by UUID"

This reverts commit 85bc69df.

Issue #2353611 by larowlan, dawehner, sime, alexpott, Wim Leers, tstoeckler: Make it possible to link to an entity by UUID

Issue #2696669 by mbovan, Berdir, sanja_m: Incomplete/broken access checking in EntityController::addPage()

Issue #2666792 by bojanz, dawehner, edysmp, heddn: Provide a route provider for add-page of entities

Issue #2600666 by tim.plunkett: Route definitions using entity type paramconverters with serial IDs should add an integer requirement