adding form elements
setting up form to POST
converting link to use Html link helper
lots of changes

* Set db configuration.

* Renamed AccountController to match CakePHP convention of pluralizing
controller names. This also req'd updating the name of the related views
folder.

* Adding a User model class (not sure if really needed)

* Switching registration view back to use the CakePHP form helper classes
b/c they work w/ model binding.

* Updating the Accounts controller register action to save the user to the
 db.