Issue #3421626 by phenaproxima, Wim Leers, borisson_: Mark config schema types (field.field_settings.* and field.storage_settings.*)) for field types that have no settings as fully validatable

Issue #3067609 by quietone, alexpott, justafish, sheanhoxie, flocondetoile, heddn: Fix config schema for links and migration of link default values

Issue #3107243 by kishor_kolekar, Kartagis, prabha1997, Neslee Canil Pinto, jungle, kiamlaluno, longwave, pandaski, alexpott, catch: Fix punctuation in link.schema.yml label

Issue #2233883 by benjy, hussainweb, ultimike: Link migration needs to convert source url into the appropriate route format for storage

Issue #2386325 by Gábor Hojtsy: Recurring config schema problems with datetime and link field values in migrate tests

Issue #2379697 by Gábor Hojtsy: Fix configuration schema issues in block content (indirectly link and field test) modules

Issue #2378055 by Gábor Hojtsy: Reorganise config schema for entity_form_display / entity_view_display

Issue #2165835 by yched, tstoeckler: Rename EntityDisplay to EntityViewDisplay in accordance with its interface.

Issue #2167623 by danilenko_dn, sidharthap, Nitesh Sethia, krishnan.n, aitiba, alexpott, ashwinikumar, Barrett, damiankloip, deepakaryan1988, foxtrotcharlie, ianthomas_uk, neetu morwani, nonsie, piyuesh23, Sharique, sivaji, sushantpaste, swentel, vijaycs85, YesCT: Add test for all default configuration to ensure schema exists and is correct.