Bug fixes

• Fixed incorrect token
• Fixed tests
• Actions bar should always be visible
• Added entity operation

Issue #3017921 by aayush23, itcrowd72: Fix years in happy_new_year_page_attachments()

#1663212: Form processing ignores validation errors
#2859145: Fix coding standards

Changes since 8.x-2.13:

• #3017255 by ndobromirov, rhristov, e0ipso: Add a static cache on the isJsonApi2x() method
• #3017262 by ndobromirov, e0ipso: Further speed-ups in ConfigurableResourceType::getResourceFieldConfiguration()

this module is already used in many Drupal sites. therefore we publish the first release