Issue #1377740 by jbrown, bvanmeurs, catch, anrikun, Jorrit, rpayanm, mvc, mikeytown2, chx: file_unmanaged_move() should issue rename() where possible instead of copy() & unlink()

Issue #1987262 by the_phi, clemens.tolboom, Damien Tournoud, bshaffer, catch, alexpott, bvanmeurs: Fixed [Installation Error] Symfony: 'The service definition 'request' does not exist.'