Issue #1834002 by Gábor Hojtsy: Fixed Delete operations are all over the place. Remove tabs, provide title in routing.
Issue #2087995 by amateescu: All entity post*() and pre*() methods should call their parent implementation.
Issue #2083615 by Gábor Hojtsy, YesCT: Use links annotation for config entity URI like for content entities.
Issue #2085907 by YesCT, Gábor Hojtsy: Ensure all configuration entities have an Edit/Configure tab by default.
Issue #1927174 by jessebeach, Wim Leers, nod_, Gábor Hojtsy: Complete the work to make the Toolbar administration menu sub tree rendering more efficient.
Issue #2089635 by tim.plunkett, disasm, larowlan: Convert non-test non-form page callbacks to routes and controllers.
Issue #2087231 by tim.plunkett, pwolanin: Add a PluginBase in the Core namespace with t() as a helper method.
Issue #2090973 by tstoeckler: Minor comment typo in EntityNG.
Issue #2076033 by juampy: Fixed PHP warning when looking if a REST resource defines authentication providers.
Issue #1199946 by alexpott, fubhy, bojanz, steinmb, chx, catch: Fixed Disabled modules are broken beyond repair so the 'disable' functionality needs to be removed.