Javacript error when using quotes in list name

Hello,

I have detected an error with the MailPoet Subscriber field.

Steps to reproduce:

1. Create a list with a name with double quotes in it, like My “amazing” list
2. Create a new gravity form: it is not possible to add any field

Thanks to developer tools I’ve been able to see where the problem com from:
the MailPoet subscribe field load all the MailPoet lists as default value.
The names of the lists are not properly encoded which causes this issue.

I was able to fix it by changing line 151 in add-on-gravity-forms-mailpoet.php
Instead of:
$choice .= 'new Choice("'.$value["name"].'","'.$value["id"].'"), ';
I wrote
$choice .= 'new Choice('.json_encode(esc_html($value["name"])).',"'.$value["id"].'"), ';

Now everything is working fine again!