Issue #2259567 by jcnventura, eelkeblok, joegraduate, thejimbirch, nvahalik, Lendude, andypost, anmolgoyal74, vacho, oriol_e9g, trackleft2, DamienMcKenna, smustgrave, nelp, LOBsTerr, twills, huzooka, Gauravvvv, xopoc, caesius, gyuhyon, mgifford, joelpittet, fietserwin, mark.labrecque, fabio84, lauriii, greggles, alexpott, mondrake, catch, quietone, drugan, jungle, DuaelFr: Support SVG files for theme logo setting

Issue #3204810 by andypost, RoSk0, smustgrave, quietone, cedewey, Amber Himes Matz, larowlan, benjifisher: Add new permission for accessing help pages

Issue #3158562 by jhodgdon, pameeela, dww, sime, Kristen Pol: Consistently refer to "menu links" as that, not "menu items", in the UI

Issue #2892821 by tedbow, zaporylie, alexpott, Wim Leers, dagmar, yoroy, effulgentsia, Bojhan: Core modules check node module's "access content" permission for displaying things that have nothing to do with nodes

Issue #2328411 by dawehner, geerlingguy, herom: Convert all permissions to yml files and permission callbacks.