Issue #2099599 by jantimon: Minor for-loop optimizations for base.js.
Issue #2150179 by swentel, larowlan: Delete confirm form for locked fields is hotlinkable.
Issue #2072995 by claudiu.cristea, yched: Change notice: Move FAPI callbacks for file/image widgets in classes.
Revert "Issue #2141539 by yched, JStanton, InternetDevels, blesss: Rename FieldItemListInterface::filterEmptyValues() to filterEmptyItems()."

Conflicts with a beta blocker; rolling back temporarily.

This reverts commit dc4327ba1d234903722b598358dcc53889efb8a2.
Revert "Issue #2175517 by chx: Entity displays are themselves config entities."

Needs more discussion.

This reverts commit 129cd90f61bbd7793f08fbd5fee914d4b792c59a.