Revert "Decided Drupal 7 won't work for this, so removing the module"

After looking at a couple of PHP frameworks and django I'm giving
Drupal another go. It's not a very good long term option, but I'm
familiar with it and I just need to get something off the ground.

This reverts commit 53069191bacbd52e70e95df2da0a7cc6deef1cde.