Issue #2358911 by chx: Fix docs for ViewsArgumentValidator annotation class
Issue #2246647 by mpdonadio, cilefen, YesCT, tim.plunkett: Rename PluginBag to LazyPluginCollection.
Issue #2332935 by plach, alexpott, dawehner: Allow code to respond to entity/field schema changes.
Issue #2357185 by penyaskito: Remove unnecessary setup in NodeCacheTagsTest.
Issue #2215345 by jhodgdon, paulh | joachim: Fixed docs for MenuLinkTreeInterface unclear.
Issue #2329919 by lauriii, Cottser, lanchez | davidhernandez: Move views_ui classes from preprocess to templates.
Issue #2358147 by DuttonMa: Fixed Code improvement in install.
Issue #2353711 by jarsenx | ultimike: D6->D8 Migration missing variable: update_check_frequency.
Issue #2353683 by micnap | ultimike: D6->D8 Migration missing variable: allow_insecure_uploads.
Issue #2332935 followup by plach: Allow code to respond to entity/field schema changes.
Issue #2356183 by michaellenahan | dawehner: Use array of type X in views.
Issue #2353691 by micnap | ultimike: D6->D8 Migration missing variable: page_compression.
Merge remote-tracking branch 'origin/8.0.x' into action-context-2011038
Added a action test base that also tests the action plugin annotation.
Fixed user bulk form unit test, fixed variable names.
Fixed node bulk form unit test.
Removed unused type information from the action config entity.