Issue #2098795 by tim.plunkett, Sean Charles, tstoeckler, dawehner, larowlan, damiankloip: Create Base Class for RouteSubscriber Class.

Issue #2062761 by tim-e, larowlan, jhodgdon, ifrik, pameela: Update hook_help() for custom_block() modules.

Issue #2041629 by tkoleary, mcrittenden, manningpete, superspring: Shorten ridiculously long and verbose text in file upload field.

Issue #2114127 by Alan D.: Fixed Missing provider key in views.view.user_admin_people().yml - Undefined index: provider in Broken->adminLabel().

Issue #2112303 by Gábor Hojtsy: Fixed Random extra text around translatability configuration is confusing.

Issue #2046367 by jhodgdon, amateescu, larowlan, juanolalla: Menu routing docs do not match what the code is doing.

Issue #2098011 by larowlan: Support dynamic route parameters to enhance comment admin paths with entity type and field name from comment bundle.

Issue #1998648 by grisendo, penyaskito, Kristen Pol, YesCT, Gábor Hojtsy, jair: 'Administration pages language' user account setting should be hidden if not used.

Issue #2043527 followup by Gábor Hojtsy: Fixed Theme name is included in block machine name but should be stored as a key instead.

This reverts commit 7b08fd63.

Issue #2043527 followup by tim.plunkett: Fixed Theme name is included in block machine name but should be stored as a key instead.

Issue #1851414 by nod_, quicksketch, frega, dawehner, damiankloip: Convert Views to use the abstracted dialog modal.

Issue #2112237 by vijaycs85, neclimdul, damiankloip: Fixed Regression: Remove EntityFormControllerNG from book module.

Issue #2098015 by slv_: Fixed Node delete is not correctly removing search information; node update is using a hook instead of method.

Issue #2061935 by m1r1k, danylevskyi, joelpittet: Remove calls to deprecated global $user in forum module.

Issue #2045931 by PerthSam152, LinL, adsw12, joelpittet: Replace all module_exists() deprecated function calls.

This reverts commit cc84f390 - bad
commit message.

Issue #2060705 by yched, Hydra, swentel, amateescu: Remove the 'hidden widget' plugin, it is actually never used.

Issue #2063671 by kim.pepper, ParisLiakos, LinL: Use the aggregator category storage in AggregatorCategorizeFormBase.