Issue #2673960 by Jo Fitzgerald, hussainweb, phenaproxima, mikeryan, quietone, vasi: Unable to migrate D7 User cck fields

(cherry picked from commit eb271e536e16f13664118e168d6670a0e5d62f38)

Issue #2746671 by Jo Fitzgerald, stella, andrewmacpherson, hussainweb, tom friedhof, chriscalip, mikeryan: CCK field data not available for D7 taxonomy term migrations

(cherry picked from commit 98350348)

Issue #2130277 by phenaproxima, michaellenahan, Jo Fitzgerald, David Hernández, hardik.p, fastangel, alvar0hurtad0: Variable to config: filter.settings [D7 only]

(cherry picked from commit da0c4fa4)

Revert "Issue #2746671 by Jo Fitzgerald, stella, andrewmacpherson, hussainweb, tom friedhof, chriscalip: CCK field data not available for D7 taxonomy term migrations"

This reverts commit d002382f.

Issue #2746671 by Jo Fitzgerald, stella, andrewmacpherson, hussainweb, tom friedhof, chriscalip: CCK field data not available for D7 taxonomy term migrations

(cherry picked from commit 11cb2b73)

(cherry picked from commit 45b87d82)

Issue #2621798 by quietone, hussainweb, kekkis, Yogesh Pawar, Jo Fitzgerald: Variable to config: global theme settings [d7]

(cherry picked from commit 50e815dc)

Issue #2611066 by hussainweb, svendecabooter, brunodbo, generalredneck, iMiksu, joelpittet: Migration path to entity reference field from 7.x

(cherry picked from commit 4f4904db)

Issue #2687851 by quietone, mikeryan, heddn, xjm, catch: Refactor run() method on Migrate UI batch and remove the $operation parameter

(cherry picked from commit fee4c4e2)

Issue #2225293 by maxocub, penyaskito, Gábor Hojtsy, quietone, mitrpaka, Sonal.Sangale, rvilar, phenaproxima, Ryan Weal: Migrate D6 and D7 language negotiation settings

(cherry picked from commit 1380ab9d)

Issue #2353709 by quietone, maxocub, sidharthap, phenaproxima, Gábor Hojtsy: Variables to config: language.types [d7]

(cherry picked from commit 635e4ee3)

Issue #2746293 by maxocub, Gábor Hojtsy, penyaskito: Migrate content_translation_source when migrating node translations

(cherry picked from commit 5deeecef)

Issue #2690001 by quietone, vasi, mikeryan, infopicard, phenaproxima: Migrate: Don't deduplicate forum vocabulary

(cherry picked from commit 5112179b)

(cherry picked from commit 8d783b7c)

(cherry picked from commit 057d3dc5)

Issue #2821774 by tim.plunkett: MigrateUpgradeForm incorrectly using form values for multistep management

(cherry picked from commit a63e8413)

Issue #2716133 by quietone, kevinquillen, phenaproxima, mikeryan, Charlotte17: Roles are duplicated instead of updated existing roles

(cherry picked from commit 86f3f13e87a33ad0358ec5aedb0a20863255e097)

Issue #2809115 by petiar, Yogesh Pawar, maxocub: When migrating a multilingual D6 site, the overview page says that the translation upgrade path is missing

(cherry picked from commit 064f7763)

Issue #2751223 by maxocub, jeroenbegyn, Gábor Hojtsy, Jo Fitzgerald: D6 & D7 users are migrated into D8 with incorrect langcode

(cherry picked from commit 50d30d97)

(cherry picked from commit 3d7c5304)

(cherry picked from commit 2a3217ce)

(cherry picked from commit ffde2454)

Issue #2690389 by reszli, mikeryan, Gábor Hojtsy, juancasantito, zsofi.major, edgewl2, alexpott, jlbellido, penyaskito: Fix string translation in MigrateUpgradeRunBatch

(cherry picked from commit 610e36e5)

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

(cherry picked from commit 19387f80)

Issue #2695297 by mikeryan, ohthehugemanatee, quietone, vasi, Sharique, chx, benjy, phenaproxima, heddn, benjifisher: Refactor EntityFile and use process plugins instead

(cherry picked from commit 78714b90)

(cherry picked from commit 437ebf7c)

Issue #2675470 by Jo Fitzgerald, hussainweb: D7 field instance settings for any fields not on nodes are not migrating

Issue #2225775 by vasi, quietone, phenaproxima, chx, penyaskito, mikeryan, esclapes, vprocessor, steinmb, Gábor Hojtsy, Marc Angles, bwinett: Migrate Drupal 6 core node translation to Drupal 8

Issue #2692247 by alexpott, mikeryan: Pre-existing 'forum' content type prevents forum module installation

Issue #2598038 by alexpott, sethcardoza, quietone, Jaesin: Invalid passwords after D7 to D8 migration

Issue #2682585 by heddn, dscl, hanoii, willwh, hussainweb: Rename MigrationCreationTrait as it no longer creates migrations - it configures them

Issue #2701541 by xjm, yoroy, catch, mikeryan, Gábor Hojtsy: Rename Drupal Upgrade UI to Migrate Drupal UI

Issue #2701779 by ifrik, pguillard, saurabhsirdixit, catch: Edit Drupal Upgrade UI module description on Extend page

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2683421 by xjm, alexpott, hussainweb: Remove incremental and rollback options from the UI (and add them back when they are more stable)