Issue #2821263 by tedbow: If a toolbar item besides the admin menu is open when going into edit mode it is not closed

Issue #2785589 by tedbow, nod_, droplet, drpal, alexpott, Wim Leers, xjm: Fix js and jsdoc of outside-in module

Issue #2782803 by tkoleary, tedbow, xjm, cilefen, yoroy, davidhernandez, prestonso, David_Rothstein, Gábor Hojtsy, nod_, Dries: Rename Outside-in module to "Settings Tray" in the UI and in comments

(cherry picked from commit 1ffb177e)

Issue #2786459 by tedbow, nod_, martin107, tkoleary, droplet, drpal: "Offcanvas" tray should be using the existing dialog system

Issue #2753941 by tedbow, tim.plunkett, tkoleary, SKAUGHT, drpal, effulgentsia, andrewmacpherson, webchick, xjm, Bojhan, Gábor Hojtsy, Wim Leers, catch, nod_: [Experimental] Create Outside In module MVP to provide block configuration in Off-Canvas tray and expand site edit mode