Issue #1927648 by damiankloip, Wim Leers, marthinal, tedbow, alexpott, Arla, juampynr, garphy, bc, ibustos, eiriksm, larowlan, dawehner, gcardinal, kylebrowning, vivekvpandya, Sam152, neclimdul, pnagornyak, drnikki, queenvictoria, gaurav.goyal, kim.pepper, Berdir, clemens.tolboom, blainelang, moshe weitzman, webchick, linclark, dabito, skyredwang, Dave Reid, gabesullice, dagmar, klausi, andypost, aheimlich, slashrsm, pwolanin, xjm, catch, amateescu: Allow creation of file entities from binary data via REST requests

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

Issue #2481453 by dawehner, pwolanin, rteijeiro, neclimdul, znerol: Implement query parameter based content negotiation as alternative to extensions