Revert "Issue #1923406 by stefan.r, yannickoo: Use ASCII character set on alphanumeric fields so we can index all 255 characters"

This reverts commit ac4e35ce.

Issue #1923406 by stefan.r, yannickoo: Use ASCII character set on alphanumeric fields so we can index all 255 characters

Issue #2340667 by YesCT, Pedro Lozano, alexpott, martin107: Protect Drupal\Core\Language\Language::id, and use getId().

Issue #2183231 by tstoeckler, plach, jessebeach, fago, Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static database schemas for content entities.

Issue #2249113 by tstoeckler, jessebeach: Use an entity save instead of db_insert() in user_install().

Issue #2166915 by ianthomas_uk, sun | plach: Remove uses of deprecated language functions in tests and procedural code.

Issue #2168011 by xjm, jessebeach, Damien Tournoud, znerol, Xano: Remove all 7.x to 8.x update hooks and disallow updates from the previous major version.

Issue #2144919 by yched, fago, effulgentsia, amateescu, tstoeckler, chx, larowlan, swentel: Allow widgets and formatters for base fields to be configured in Field UI.

Issue #2074475 by benjy, Gábor Hojtsy: Rename {file_managed}.timestamp to 'changed' and add a created timestamp.

Issue #2148071 by Gábor Hojtsy, philipz, marthinal, penyaskito: Cannot install in foreign language (Undefined index: und in ContentEntityBase->language()).

Issue #2045931 by PerthSam152, LinL, adsw12, joelpittet: Replace all module_exists() deprecated function calls.

This reverts commit cc84f390 - bad
commit message.

Issue #1953528 by swentel, Hydra: Store 'per-bundle view mode settings' in CMI, get rid of field_bundle_settings() & its variable.

Issue #1969572 by neclimdul, larowlan, hussainweb, dawehner, damiankloip, ParisLiakos, pwieck, Berdir, socketwench: Make Uuid a service.

Issue #1199946 by alexpott, fubhy, bojanz, steinmb, chx, catch: Fixed Disabled modules are broken beyond repair so the 'disable' functionality needs to be removed.

Issue #366950 by amontero, boombatower, brianV, univate, hefox, stpaultim, EllaTheHarpy, babruix: Fixed 'Administer Users' permission should be separate from 'Administer Account Settings'.

Issue #1497374 by yched, chx, amateescu, plach, Damien Tournoud, fago, swentel: Switch from Field-based storage to Entity-based storage.

Issue #2032369 by yched: Fixed _update_8003_field_create_field() relies on field schemas never changing and plugins being available.

Issue #1872876 by chx, fubhy, dawehner, alexpott, tim.plunkett: Turn role permission assignments into configuration.

Issue #1852454 by patrickd, xjm, YesCT, Berdir, amateescu, Pancho, djroshi, dealancer, Wim Leers, jessebeach: Restrict module and theme name lengths to 50 characters.

Issue #1981342 by aspilicious, andypost, swentel: Drop procedural usage of fields in [s-u-v] modules.

Issue #1998576 by beejeebus, alexpott, swentel: Make the config import process use full config trees again.