hide_submit 7.x-2.1

Note: if you had previously used hook_hide_submit_alter then you will need to change your code on your site when you upgrade to this version!

Changes since 7.x-2.0:

• #2317141 by rymcveigh, jonloh: Uncaught TypeError when resubmitting a form that had a missing required field
• #2217435 by roball: Wrong name of CSS class in "hide_submit.css"
• #2035655 by coreyp_1: Doesn't do anything if the theme uses button instead of input
• #2080817 by Elijah Lynn: Hide submit should use drupal_alter