N°8245 - External key not saved in n-n link in edition

[bdalsass]

@see https://support.combodo.com/pages/UI.php?operation=details&class=Bug&id=8245

Bug introduced with bug N°8245 since N°7264 Update selectize.js from 0.12.4 to 0.15.2
This version of Selectize library reset the input change listeners on initialization.

Needs a better implementation because the code is quite ugly.

[steffunky]

A more elegant way would be to undo your changes and modify how the change listener is added in js/links/links_widget.js.
Line 393 we could remove the listener from the input element itself (that selectize removes on initialization) and put it on the body with a selector that matches our input.

The code would change from this:

$('#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]').off('change').on('change', function () {
    ...
});

to this:

$('body').off('change', '#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]')
    .on('change', '#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]', function () {
	.....
});

I tested it and it seems to work well