remove outcomment debugger statement
Trigger custom beforeAjaxSubmit event before ajax_submit

This is needed in a custom submit callback in the geo branch.
Merge branch 'develop' into feature-geo
geo: Fix page polygon deletion
geo: Better $ selector for form selection
Copy polygon from editor to form field in custom submit event

This makes sure this event is actually triggered, even though this
form's submit event is already bound to adhocracy.ajax_submit.

This works only because of the changes in
034596eb719b2b231afa36379f11ea0b7330dacf.