Tidy up profile buttons

[andrewbelcher]

At the moment, profile on the PD (and user dashboard) have a delete link. Let's prevent deletion (possibly even at an access level).

Also, when adding a new profile, you get 'Save' and 'Save and make default'. Let's only have save, but have it make it default.

When editing on the PD via the AJAX edit links, we need a 'cancel' link (though could be a button) that will return to the non edit variation when clicked (via ajax refresh).