Update to 8.5.5

Upstream changes:

Release notes

This is a patch release of Drupal 8 and is ready for use on production sites. Learn more about Drupal 8.

This release only contains bug fixes, along with documentation and testing improvements. Translators should take note of a minor string change since the last release.
Known issues

    View with user/% path breaks login/logout on 8.5.x - a regression from 8.4.x

    Important: If you have not already upgraded to 8.5.0, read the Drupal 8.5.0 release notes before upgrading to 8.5.5.

Search the issue queue for all known issues.
Changes since 8.5.4:

    #2921661 by heddn, maxocub, alexpott, phenaproxima, Jo Fitzgerald, badmetevils, quietone: Add support to migrate multilingual revisions
    #2977945 by awm: typo in test_node_revision_links views yml file
    Revert "Issue #2971338 by Jo Fitzgerald, quietone, joachim: MigrationLookupTest::testMultipleSourceIds() uses wrong class for mocking"
    #2971338 by Jo Fitzgerald, quietone, joachim: MigrationLookupTest::testMultipleSourceIds() uses wrong class for mocking
    #2887490 by michaellenahan, cilefen, rOprOprOp, catch: Activity Tracker cannot be enabled if there are unpublished nodes
    #2982042 by progga: UUID component's composer.json has wrong description
    #2860760 by Jo Fitzgerald, heddn, quietone, alexpott: Match setup() functionality of MigrateFileTest with MigratePrivateFileTest
    #2979813 by Wim Leers, TwoD: Add TwoD as maintainer for the editor.module component
    #2581557 by dawehner, mxh, xjm, sorabh.v6, JeroenT: Add ltrim($path, '/') in drupalGet method
    #2635046 by neclimdul, dawehner, alexpott: run-test.sh doesn't work in directories with spaces
    #2950158 by Vidushi Mehta, ankitjain28may, Shiva Srikanth T, ckrina, markconroy, Eli-T: Choose policy for defining font-weight on Umami theme
    #2875679 by mondrake, daffie: BasicSyntaxTest::testConcatFields fails with contrib driver
    #2933413 by Graber, alexpott, joelpittet, chanderbhushan, jchand: Improve test coverage of using bulk actions when the view has an exposed form using AJAX
    #2978596 by visshu007, Chi: views_add_contextual_links() references to non existent views_preprocess_page() function
    #2977175 by borisson_, PieterJanPut, tstoeckler, msankhala: DataDefinition::setConstraints() should be on DataDefinitionInterface
    #2822611 by Mile23, Wim Leers, alexpott, Berdir, catch, dawehner, xjm, tstoeckler, borisson_: Document why UserInterface + FileInterface + MenuLinkContentInterface + … extend \Drupal\Core\Entity\ContentEntityInterface
    #2969598 by msankhala, joachim: badly formatted sample code in docs for Select::orderBy()
    Revert "Issue #2886609 by quietone, Jo Fitzgerald, jhodgdon, masipila, heddn, Gábor Hojtsy, mikeryan: Migrate D6 i18n loacalized translations of taxonomy terms"
    #2975751 by msankhala, leolando.tan, joachim, claudiu.cristea: incorrect @return for Tables::getTableMapping()
    #2927723 by longwave, artreaktor, chiranjeeb2410, ankitjain28may, cilefen, dawehner: The URL "/ " with trailing space is not getting recognized as
    #2737773 by antongp, wturrell, pcambra, cilefen, Darvanen, cwells, manningpete, alexpott: Proper way to install Drupal, missing vendor folders, example.gitignore
    #2943107 by mherchel, NicholasS, jordana, finnsky, tomphippen, smaz, markconroy, andrewmacpherson, kjay: Umami support for Internet Explorer 11
    #2979166 by RajeevK, lomasr: Wrong documentation on SiteCacheContext class
    #2749901 by MaskyS, kleog, priya.chat, harsha012, rakesh.gectcr, shobhit_juyal, snehi, SenthilMohith, neerajpandey, gawaksh, thompsizzle, ecrown, mohit1604, andrewmacpherson, surbz, rahulrasgon, riddhi.addweb: Add README.txt to Bartik theme
    #2886609 by quietone, Jo Fitzgerald, jhodgdon, masipila, heddn, Gábor Hojtsy, mikeryan: Migrate D6 i18n loacalized translations of taxonomy terms
    #2772251 by msankhala, markpavlitski, joachim: description for EntityForm::actions() could use rewording
    #2978848 by claudiu.cristea, amateescu: EntityReferenceFieldItemList::referencedEntities() doesn't work for computed fields
    #2073467 by maxocub, Jo Fitzgerald, pobster, masipila, plach, heddn, phenaproxima, catch: Migrate Drupal 7 Entity Translation settings to Drupal 8
    #2877828 by msankhala, joachim: FormInterface::getFormId() should state restrictions on the returned ID string
    #2855054 by alexpott, LoMo, wesleydv, Artusamak, gawaksh, xjm: User cancel link doesn't redirect to the homepage
    #2936821 by msankhala, joachim, lomasr, marxjohnson: unclear docs in MigrateProcessInterface
    #2951715 by dravenk, marvil07, rakesh.gectcr, davidsonjames, heddn, Jo Fitzgerald, quietone, alexpott, maxocub: Log message if static_map plugin skips the row
    #2932777 by mondrake, borisson_, alexpott, daffie: Risky count() in SQLite Statement
    #2951163 by nkoporec, Parvateesam, joachim: CachePluginBase::cacheGet()/::cacheSet() doesn't document @params or @return

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