Issue #3341113 by Spokje, _pratik_, smustgrave, catch: Remove @todo-comment linking to closed issue in \settings_tray_install

Issue #2803375 by cilefen, tedbow, saurabh-chugh, Wim Leers: Rename Outside-in module to "Settings Tray" for real

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 #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