Issue #2664780 by Wim Leers, tedbow, dawehner, klausi: Remove REST's resource- and verb-specific permissions for EntityResource, but provide BC and document why it's necessary for other resources

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #1867518 by plach, dawehner, yched, iMiksu, epari.siva, marcvangend, Fabianx, Wim Leers, effulgentsia: Leverage entityDisplay to provide fast rendering for fields