Issue #2981225 by maxocub, RumyanaRuseva, mpp: Migration fails to create instance when non-bundleable entity type exists

(cherry picked from commit 68c7b00c)

Issue #2073467 by maxocub, Jo Fitzgerald, pobster, masipila, plach, heddn, phenaproxima: Migrate Drupal 7 Entity Translation settings to Drupal 8

Issue #2912348 by maxocub, Jo Fitzgerald, masipila, heddn, phenaproxima: Handle entity_references related to Drupal 6 and 7 node translations with different IDs

Issue #2500495 by quietone, Jo Fitzgerald, phenaproxima, maxocub, alexpott, mikeryan, chx: Upgrade path for Color 7.x

Issue #2912353 by maxocub, alexpott, heddn, phenaproxima, quietone: Handle menu_items related to Drupal 6 and 7 node translations with different IDs

Issue #2409435 by Jo Fitzgerald, phenaproxima, srjosh, edysmp, KarenS, svendecabooter, bdimaggio, hosef, Yogesh Pawar, heddn, quietone, alexpott, larowlan: Upgrade path for Book 6.x and 7.x

Issue #2942388 by alexpott, quietone: Ensure d7_url_alias migration works for paths without a slashes

Issue #2894068 by Jo Fitzgerald, davidsickmiller, alexpott, heddn, Yogesh Pawar, quietone, xjm: datetime_type is not set correctly when migrating datetime fields from D7

Revert "Issue #2894068 by Jo Fitzgerald, davidsickmiller, Yogesh Pawar, heddn, quietone: datetime_type is not set correctly when migrating datetime fields from D7"

This reverts commit a151cef1.

Issue #2894068 by Jo Fitzgerald, davidsickmiller, Yogesh Pawar, heddn, quietone: datetime_type is not set correctly when migrating datetime fields from D7

Issue #2887142 by maxocub, phenaproxima, Jo Fitzgerald, Adita, heddn, andypost: NodeType source plugin should include comment information

Issue #2914649 by masipila, dipakmdhrm, phenaproxima, maxocub: [D7] Vocabulary migration: vid incorrectly mapped from vocabulary name instead of machine_name

Issue #2914249 by maxocub, dillix, masipila, phenaproxima: Translated forum vocabulary migration creates duplicate forum vocabularies

Issue #2902766 by maxocub, masipila, Jo Fitzgerald: Node 'comment open / closed' status not migrated

Issue #2842222 by maxocub, heddn, vasi, Jo Fitzgerald, masipila, jeffwpetersen, catch, phenaproxima, markabur, quietone, mikeryan: D7 Plain text fields incorrectly migrated to D8 as Text (formatted)

Issue #2551727 by quietone, Jo Fitzgerald, phenaproxima, neclimdul, joelpittet, iMiksu, lostkangaroo, heddn, mikeryan, geste, alexpott, benjy: Menu link migrations should be defensive

Issue #2505283 by quietone, maxocub, Jo Fitzgerald, mikeryan, Pavan B S, penyaskito, chriscalip, phenaproxima: Handle import of private files

Issue #2620364 by quietone, bburg, Jo Fitzgerald, Yogesh Pawar, amoebanath, phenaproxima, Gábor Hojtsy, catch: Variable to config: theme settings [d7]

Issue #2725081 by quietone: Previous versions of Drupal allow vocabulary machine names longer than 32 characters

Issue #2687977 by claudiu.cristea, alexpott, prics: Comment::preSave() unconditionally sets hostname to client host

Revert "Issue #2587063 by quietone, Jo Fitzgerald, jhodgdon, phenaproxima, alexpott, mikeryan: Variable to config: search_active_modules [d7]"

This reverts commit 8deb9041.

Issue #2587063 by quietone, Jo Fitzgerald, jhodgdon, phenaproxima, alexpott, mikeryan: Variable to config: search_active_modules [d7]

Revert "Issue #2587063 by quietone, Jo Fitzgerald, jhodgdon, phenaproxima, alexpott, mikeryan: Variable to config: search_active_modules [d7]"

This reverts commit f054e606.

Issue #2587063 by quietone, Jo Fitzgerald, jhodgdon, phenaproxima, alexpott, mikeryan: Variable to config: search_active_modules [d7]

Issue #2669964 by quietone, Gábor Hojtsy, Jo Fitzgerald, phenaproxima: Migrate Drupal 7 core node translations to Drupal 8

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

Issue #2794699 by Jo Fitzgerald, klausi, phenaproxima: MigrateMenuSettingsTest.php is not in the correct location

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

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 11cb2b73.

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

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

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

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

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

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