Add minimum length check for textfields before auto submitting

Auto submitting after clearing the search input field to get back results.

I have tried the patch #5, but it is not working in my case, as I have exposed filter of type checkbox, so submit button is not clicked in my case. Updated the patch #5, for checkbox and radio. Please review once.

Will need a post update hook

Automatically closed - issue fixed for 2 weeks with no activity.