Issue #1251188 by Sagar Ramgade, cam8001, MauHG, sag_13684, fenstrat, ruloweb, xjm: Fixed Set unique titles for user/register, user/password, and user/login menu items.

Issue #1175054 by msonnabaum, chx, sun, tim.plunkett, arlinsandbulte, beejeebus: Add a storage (API) for persistent non-configuration state.

Issue #1184272 by Berdir, corvus_ch, sun: Remove deprecated $conditions support from entity controller.

- Patch #542828 by sun, Pasqualle, marcingy, Gábor Hojtsy: do not special case disabled admin theme.

Issue #1711070 by kid_icarus, tim.plunkett, xjm, droplet, zendoodles and cam8001: Convert tests to use ::$modules property instead of parent::setUp($modules).

Issue #1496458 by swentel, pcambra, n3or, kbasarab, sun, marcingy: Convert maintenance mode settings to configuration system.

Issue #1496542 by cosmicdreams, sun, chx, vasi1186, aspilicious, alexpott, nadavoid, Pedro Lozano, disasm, andypost | heyrocker: Convert site information to config system.