#5 Migrate NOW for smaller jobs

[Jason Solis]

Add a choice to the user to either just run the
migration NOW, or save it out to a shell script to be
run later. Migrate NOW would be used for smaller
migration jobs.

This will be easily configurable via the simple HTML
form. This way the administrator can either force which
method the end use must use, or can leave it up to the
end user.

NOTE - Once this feature is in place and you choose to
have the script run right when the user submits the
request, a warning should be displayed to the user
about their web server timeout.
(Remember, web server timeouts are different from php
timeouts which are controlled by the max_execution_time
= 0 property in the php.ini file).