final changes, progress bar to match install.php
final changes, progress bar to match install.php

Signed-off-by: 1c0ca3943539d8e3a2585c5cab9f4461504a8b46@simplemachines.org

StealthWombat/SMF2.1-more-forkery,margarett/SMF2.1,mkress/SMF2.1,MustafaCan/SMF2.1,margarett/SMF2.1,MustafaCan/SMF2.1,georaldc/SMF2.1,mkress/SMF2.1,mkress/SMF2.1,georaldc/SMF2.1,StealthWombat/SMF2.1-more-forkery