Users.views: Remove validate on submit.

We only have validate() now.

validate_on_submit not in wtforms.form.Form class.
Users.views: Remove validate on submit.

We only have validate() now.

validate_on_submit not in wtforms.form.Form class.
Merge hotfix-remove-validate-on-submit (#73) into master

Users.views: Remove validate on submit.

We only have validate() now.

validate_on_submit not in wtforms.form.Form class.