Introduces a change in instantiating the EventRegisterForm (now also needs teh current user passed).

Moved init code from registration ofmr, reusing it to add the same
fields to the registration form. Consider moving to a form set instead.

Fix name of file.

See merge request !19

Maintenance mode

See merge request !18

Add maintenance mode. Closes #31.

See merge request !17

Before, __getattr__ wouldreturn None, which is a valid value for an
attribute.  This masked the naming issue in
8a03085d.

This reverts commit 97b52407.