Broken image "src" for icons in admin for Django >= 1.9

[gpip]

At templates/hstore_default_widget.html django_hstore links to admin/img/icon_addlink.gif and others, but Django 1.9 replaced those by svg ones.

For instance, in django_hstore you'll find <img src="{{ STATIC_URL }}admin/img/icon_addlink.gif" width="10" height="10" alt="{% trans 'Add Another' %}">

While Django expects something closer to <img src="{% static 'admin/img/icon-addlink.svg' %}" alt="{% trans 'Add Another' %}"/>

[nemesifier]

Thx for reporting, send a patch if you can.

[nemesifier]

Closed by #149 and 9ed1804