Fix incorrect states logic for allow reinstall.

Fix incorrect states logic for allow reinstall.

Block running of tasks at the limit, not one more than the limit.

Update database immediately after syncing it. Files sync might fail.

Update database immediately after syncing it. Files sync might fail.

Run file sync from root as well.

Run sync commands from project root so alternative drush aliases appear.

Create the task using PHP, not drush command exec.

For some reason, this was causing the task to try and run `provision-deploy` instead of `provision-deploy-code`! No idea.

Fix backup and restore! Sorry about that, all.

Remove states for important re-install config.