Revert "Issue #2485385 by phenaproxima, quietone, Berdir, blazey, hussainweb, mikeryan, benjy, alexpott: Move highwater field support to the source plugin, and do not expose its internals on MigrationInterface"

This reverts commit 0308eb77.

Issue #2485385 by phenaproxima, quietone, Berdir, blazey, hussainweb, mikeryan, benjy, alexpott: Move highwater field support to the source plugin, and do not expose its internals on MigrationInterface

Issue #2655104 by dawehner, jhedstrom, gclicon, chr.fritsch, smk-ka, phenaproxima: List unmet configuration dependencies instead of just failing

Issue #2799021 by dawehner, Wim Leers: Ensure a failing PHPUnit test shows enough information via run-tests.sh

Issue #2773333 by Berdir, Juterpillar, Wim Leers, Fabianx, renukakulkarni: Form validation errors, status messages on form submission are shown after page refresh when form is rendered in block

Issue #2657978 by maxocub, quietone, Gábor Hojtsy, Kristen Pol, alexpott:  Variable to config: language_default [d6]

Issue #2785657 by mathieso, dishabhadra, ifrik, dawehner, YesCT, tim.plunkett: Misleading text in block visibility pages description

Issue #2787479 by Wim Leers, Sam152, quicksketch: Anon users can access editor dialogs because all users have plain_text

Issue #2791211 by cilefen: Cache::getBins should explain the returned data types implement CacheBackendInterface

Issue #2785891 by xjm, dawehner, tim.plunkett, alexpott, catch, YesCT, daffie, webchick: The distinctions between modules, themes, and other subsystems are not relevant in MAINTAINERS.txt or the issue queue component field

Issue #2539634 by Berdir, dawehner, cilefen, mpp, claudiu.cristea, amateescu, kristiaanvandeneynde: PathItem::delete() never runs because the path field type is a computed field in disguise

Revert "Issue #2685917 by larowlan, tim.plunkett, cheeky-micah: Placing the same custom block, more than once, with a period in the title, results in an Error"

This reverts commit 803a98af.

Issue #2685917 by larowlan, tim.plunkett, cheeky-micah: Placing the same custom block, more than once, with a period in the title, results in an Error

Issue #2794089 by Wim Leers, yobottehg, slashrsm: SessionManager::destroy() is incompatible with streamed responses: tries to send response header after headers have already been sent, causing watchdog to fill up with PHP warnings

Issue #2797943 by jmuzz, claudiu.cristea, dawehner: Add support for clickLink()'s second argument to BrowserTestBase

Issue #2774195 by lauriii, claudiu.cristea: Passing attributes to field element label is not possible

Issue #2796329 by Wim Leers: \Drupal\Core\File\MimeType\ExtensionMimeTypeGuesser maps the 'js' extension to the 'application/x-javascript' MIME type instead of 'application/javascript'

Revert "Issue #2793443 by dawehner: Make private functions protected in BrowserTestBase/KernelTestBase"

This reverts commit bde19066.

Issue #2641380 by gnuget, darketaine, Chernous_dn, dinarcon, mohit_aghera, joelpittet, hass, davidhernandez, Wim Leers, Cottser: image-widget.html.twig references a non-existing classy/image-widget library

Issue #2787187 by claudiu.cristea, grahl, azinck, Fabianx, dawehner: Data loss: Deleting a translation of an entity deletes all file_usage entries for files referenced by the entity

Revert "Issue #2787187 by claudiu.cristea, grahl, azinck: Data loss: Deleting a translation of an entity deletes all file_usage entries for files referenced by the entity"

This reverts commit a1b670fb.

Issue #2787187 by claudiu.cristea, grahl, azinck: Data loss: Deleting a translation of an entity deletes all file_usage entries for files referenced by the entity

Issue #2758559 by eporama, leolando.tan, kamalrajsahu21, tstoeckler, larowlan, claudiu.cristea: EntityType::setStorageClass() violates its interface

Issue #2785355 by timmillwood, dawehner, claudiu.cristea, borisson_: Expose the class resolver on \Drupal

Issue #2787641 by pwolanin, YesCT: Add non-UI mechanism for setting block weight through block forms

Issue #2672088 by joelpittet, daffie, catch, dawehner, mikeytown2: Add static cache to DatabaseConnection ::escapeDatabase(), ::escapeTable(), ::escapeField() and ::escapeAlias()

Issue #2790111 by neclimdul, mikeryan: DrupalSqlBase doesn't include missing source in requirements exception

Issue #2786583 by claudiu.cristea, jhedstrom, effulgentsia: Create a base class for DateTimeFieldTest and DateRangeFieldTest and move common code into it

Issue #2682461 by arunkumark, jonhattan, quietone, benjy, xjm, RavindraSingh, catch: Add links to documentation in all migrate process plugins

Issue #2760905 by anavarre, claudiu.cristea, amitaibu, dawehner: The documentation should be more explicit about PHPUnit requesting the webserver user to perform all functional tests