Maintenance fixes only

TBD;

Adds two base fields to all nodes.

Node keeper: prevents people who don't have the 'bypass node access' permission
from deleting nodes where that checkbox is enabled.

A11Y Paragraphs Tabs gives the user the ability to easily add tabs via paragraphs to their content that complies to Accessibility (A11Y) standards.

In #2976035: Entity type CRUD operati

It helps you to eliminate the portions of CSS you aren't using. Usually should be used to generate AMP pages, where is the fixed limit for maximum style size.