Issue #1916790 by plach, YesCT, penyaskito, Gábor Hojtsy, das-peter, herom, larowlan: Convert translation metadata into regular entity fields

Revert "Issue #1916790 by plach, YesCT, penyaskito, Gábor Hojtsy, das-peter, herom, larowlan: Convert translation metadata into regular entity fields"

This reverts commit 920382d4.

Issue #1916790 by plach, YesCT, penyaskito, Gábor Hojtsy, das-peter, herom, larowlan: Convert translation metadata into regular entity fields

Issue #2384481 by rpayanm, daffie, tadityar, hussainweb, areke, claudiu.cristea: Make the class variables protected for NodeType

Issue #2355909 by penyaskito, alexpott, Gábor Hojtsy, DuaelFr: language.settings config is not scalable

Issue #2241727 by mon_franco | YesCT: Remove button name override and update tests for that rename of Save to Save configuration in .

Issue #2336177 by alexpott, YesCT: Fixed ConfigurableLanguage cannot be created/removed directly, integrate language_save() and language_delete().

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2218057 by jhodgdon, dawehner: Search Views integration - filter needs to join to node_field_data.langcode.