Issue #3191468 by Gábor Hojtsy, xjm, ckrina, DeepaliJ, bskibinski, Deepthi kumari, catch, Neslee Canil Pinto, Dennis Cohn, boulaffasae, bnjmnm, andypost, aleevas, antonellasevero, anu.a_95, bandanasharma, atul4drupal, cedric_a, codersukanta, Hardik_Patel_12, Krzysztof Domański, hash6, himanshu_sindhwani, heykarthikwithu, HOG, fhaeberle, Dinesh18, design.er, DyanneNova, effulgentsia, ethomas08, emma.maria, Adam Szalapski, kostyashupenko, tedbow, vishalchandna, volkerk, aburrows, Pls, martin107, lauriii, alwaysworking, VD39, anand.toshniwal93, dawehner, justafish, iKb, eojthebrave, finnsky, Ambient.Impact, tunic, alexpott, andrewmacpherson, antoineh, anmolgoyal74, slip, rsau, lhuria94, jeevanbhushetty, porkloin, progga, rahul01, pwilson, hudri, huzooka, ravi.shankar, reinchek, rensingh99, sauravk, saschaeggi, ranjith_kumar_k_u, SharmaAnmol, pradeepjha, prabha1997, pranav45, priyanka.sahni, rainbreaw, quiron, sd9121, shaal, tim.plunkett, thekishanraval, yoroy, nod_, Devipriya Rajamanickam, Archita Arora, thalles, tanubansal, Vinodhini.E, shashikant_chauhan, shimpy, sibustephen, swatichouhan012, siddhant.bhosale, pminf, phenaproxima, kiran.kadam911, katrienc, KondratievaS, Kristen Pol, Lal_, L2G2, katherined, katannshaw, Indrajith KB, imganesh, Jongruk Timmanee, iro, kapilkumar0324, joseph.olstad, Lendude, Maithri Shetty, mrinalini9, mradcliffe, narendra.rajwar27, neelam_wadhwani, olli, Peter Majmesku, modulist, mfairchild365, komalk, kishor_kolekar, martijn.cuppens, Meenakshi.g, Vidushi Mehta, Neetika K: Retire "Admin UI and JavaScript Modernisation" initiative in favour of "Decoupled menus" and the upcoming "Easy out of the box" initiative

Issue #3079738 by lauriii, saschaeggi, webchick, xjm, andrewmacpherson, shimpy, effulgentsia, Wim Leers, DyanneNova, svettes, rainbreaw, fhaeberle, ckrina, AaronMcHale, justafish, catch, charlieweb82, AntoineH, lot007, pzajacz, kostyashupenko, jasonbarrie, antonellasevero, finnsky, worldlinemine, bnjmnm, RobLoach, Dennis Cohn, huzooka, Archita Arora, joachim, jrockowitz, benjifisher, shaal, Gábor Hojtsy, quiron, L2G2, ccasals, hampercm, if-jds, abhisekmazumdar, Kami Amiga, pivica, zrpnr, BrightBold, imalabya, jhedstrom, Neslee Canil Pinto, maliknaik, junaidmasoodi, Maithri Shetty, pranav73, mandclu, modulist, nod_, philosurfer, phenaproxima, mherchel, mlncn, rafuel92, leymannx, kiboman, Swapnil_Kotwal, anevins, evankay, rfmarcelino, thamas, brianperry, idebr, joelpittet, boulaffasae, alexpott, volkerk, DuneBL, Eli-T, Mahenkvyas22: Add Claro administration theme to core

Issue #2962110 by samuel.mortenson, drpal, andrewmacpherson, ckrina, phenaproxima, yoroy, webchick, amateescu, chr.fritsch, starshaped, lauriii, webflo, Dennis Cohn, dawehner, seanB, rfmarcelino, DyanneNova, benjifisher, jan.stoeckler, danbohea, John Pitcairn: Add the Media Library module to Drupal core