Usernames with `-` break Ona

[hallahan]

If you sign up for an account in Ona, and the account has a - in it, it breaks. There is something wrong with the Django templates, and all of the views stop working for that given user.

In Cadasta, a given project is associated with a given Ona username. Because CKAN likes to turn spaces into -, a corresponding Ona username linked to that project also would have a -, thus breaking Ona.

I suggest to either fix this problem with Ona's HTML template or slice out the - when directing the user to set up an Ona account in the Cadasta UI.