Revert "Issue #2433009 by hussainweb, grom358, daffie, larowlan, alexpott, pcambra, benjy, jibran, phenaproxima, moshe weitzman, nick_schuch: Add Mink, with Goutte driver, to core"

This reverts commit 2b96082d.

Issue #2433009 by hussainweb, grom358, daffie, larowlan, alexpott, pcambra, benjy, jibran, phenaproxima, moshe weitzman, nick_schuch: Add Mink, with Goutte driver, to core

Issue #2416409 by alexpott, bojanz: Delete dependent config entities that don't implement onDependencyRemoval() when a config entity is deleted

Issue #2429261 by Wim Leers: Replace the hardcoded cache key on the book navigation block with a 'book navigation' cache context

Issue #2253593 by neclimdul, damiankloip: Stop classloader searching filesystem for classes before drupal_classloader() is called

Issue #2363341 by tim.plunkett, donquixote, adci_contributor: Throw exception in Drupal::service() and friends, if container not initialized yet

Issue #2421263 by alexpott, formatC'vt, kim.pepper, andypost, larowlan, chx: Potential data loss: concurrent (i.e. by different users) node edits leak through preview

Issue #1013034 by bzrudi71, jaredsmith, andypost, alexpott, dbcollies, ncl, jhedstrom, kathyh: PostgreSQL constraints do not get renamed by db_rename_table()

Issue #1853856 by tim.plunkett, alexpott: Document that ConfigEntityBase and ConfigStorageController are tightly coupled

Issue #2426181 by effulgentsia, mpdonadio, xjm: Add a Url::fromUserInput() wrapper method for generating URLs from user-entered paths

Issue #2349591 by betovarg, Outi, LoMo, juho.lehmonen, droplet, amitgoyal, aliyakhan, jerrylow, klakegg: Dropdown action list shows up as a simple list without JavaScript

Issue #2426509 by yched, fago: ContentEntityBase::__set() messes with values that happen to be TypedData

Issue #2429103 by cpj: Remove deprecated methods SessionManager::enable(), SessionManager::disable() and SessionManager::isEnabled()

Issue #2329101 by Wim Leers: CacheableInterface only has a getCacheKeys() method, no getCacheContexts(), leads to awkward implementations

Revert "Issue #2144669 by Mile23, Nitesh Sethia: Improve/Refactor TestBase Through Expanded Unit Testing"

This reverts commit 921317dc.

Issue #2413753 by alexpott, olli: Views recalculating the dependencies for non overridden handlers and plugins multiple times

Issue #2377113 by JeroenT, mglaman, LinL, pcambra: Replace all instances of entity_load('block_content') and entity_load_multiple('block_content') with static method calls

Issue #2419897 by penyaskito, Wim Leers, webflo: Javascript translations are loaded in the wrong order due to missing dependencies

Issue #2422685 by balagan: Language negotiation configuration page titles inconsistent, should not even mention "negotiation"