Make datastore find_user method accept different params so a user can be retrieved by other such things such as a confirmation token

flask_security/templates/register.html

@@ -0,0 +1,7 @@
+<form action="{{ url_for('flask_security.register') }}" method="POST" name="register_form">
+  {{ form.hidden_tag() }}
+  {{ form.email.label }} {{ form.email }}<br/>
+  {{ form.password.label }} {{ form.password }}<br/>
+  {{ form.password_confirm.label }} {{ form.password_confirm }}<br/>
+  {{ form.submit }}
+</form>