Slight clean up of the way migration and site creation forms are called. Make...

Slight clean up of the way migration and site creation forms are called.  Make the output from migration tool look cleaner using drupal's status messages.

git-svn-id: file:///tmp/wdn_thm_drupal/branches/drupal-7.x@187 20a16fea-79d4-4915-8869-1ea9d5ebf173