MarkUsProject/Markus — pull request #1478 by arkon94 (2014-05-26 20:37:50+00:00)
Title: Manual disable/update of log in button

It seems that `:disable_with` doesn't work properly for `submit_tag`s in `form_tag`s sometimes (and neither does the newer `data-disable-with`), so the button is manually disabled/updated when it's clicked with JavaScript.