Revert "Consolidate parts of WebStart.php and doMaintenance.php into Initialize.php"

Good idea, but moves things about too much and will break things. Let's revisit and not break things.

This reverts commit 214931ed33124a36e01e105c41c7d7e4797bde82.

Change-Id: I6f5026b572105cd9e7d6de12a491c7ee45ac3dbc
Merge "Revert "Consolidate parts of WebStart.php and doMaintenance.php into Initialize.php""