Issue #2898274 by aleevas, piotrkonefal, borisson_, GaëlG, ankithashetty, dietr_ch, robpowell, alexpott: Uninstalled custom theme stuck in config blocking config import

Issue #371375 by Ammaletu, vasike, danflanagan8, KapilV, matt2000, Ryan Palmer, ZeiP, Andrew Answer, Madhu kumar, webchick, Berdir, kwinters, smustgrave, chx, cburschka, Jaza, moshe weitzman, zroger, zoo33, joachim, alexpott, ressa, dasj19, jlscott, quietone, blainelang, wturrell, tanc, MartysMind: Do not allow a module and theme to use the same name

Issue #3121157 by apaderno, neelam_wadhwani, jungle, Lendude, alexpott, bnjmnm: Small correction needed in ThemeInstallerInterface::uninstall() docblock

Issue #474684 by bnjmnm, dawehner, tedbow, pfrenssen, JohnAlbin, ademarco, kalpaitch, vdacosta@voidtek.com, rensingh99, markcarver, jungle, jhedstrom, RobLoach, almaudoh, kevineinarsson, shaal, dpagini, thedavidmeister, sreynen, Snugug, Miguel.kode, kamkejj, alexpott, Pol, sun, Wim Leers, lauriii, tim.plunkett, eaton: Allow themes to declare dependencies on modules

Issue #2708179 by anoopjohn: Fix 'Drupal.Commenting.FunctionComment' coding standard - Issues related to @throws

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2465887 by dawehner, amateescu, tim.plunkett: Extract the install/uninstall functionality to a ThemeInstaller