#submit twice

attached is a backport patch for 6.0.x for anyone that has not updated to 7.0.x yet.

MR 105 created with the following:
- Maintains the same intended solution as the original - find the element with "data-bef-auto-submit-delay" and attach listeners to it.
- Finds the correct parent with "[data-bef-auto-submit-full-form]" even when there are intermediate elements in between "[data-bef-auto-submit]" and "[data-bef-auto-submit-full-form]".
- Changed the "$form" variable to "$needsAutoSubmit" since not all elements found with the selectors are forms.

Mind submitting an MR.