Fix static urls version appending

jet/templates/admin/base.html

@@ -9,11 +9,11 @@
 <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
 <link rel="stylesheet" type="text/css" href="{% block stylesheet %}{% static "admin/css/base.css" %}{% endblock %}" />
 
-<link rel="stylesheet" type="text/css" href="{% static "jet/css/vendor.css" %}?v={{ JET_VERSION }}" />
-<link rel="stylesheet" type="text/css" href="{% static "jet/css/icons/style.css" %}?v={{ JET_VERSION }}" />
-<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/base.css" %}?v={{ JET_VERSION }}" class="base-stylesheet" />
-<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/select2.theme.css" %}?v={{ JET_VERSION }}" class="select2-stylesheet" />
-<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/jquery-ui.theme.css" %}?v={{ JET_VERSION }}" class="jquery-ui-stylesheet" />
+<link rel="stylesheet" type="text/css" href="{% static "jet/css/vendor.css" as url %}{{ url|jet_append_version }}" />
+<link rel="stylesheet" type="text/css" href="{% static "jet/css/icons/style.css" as url %}{{ url|jet_append_version }}" />
+<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/base.css" as url %}{{ url|jet_append_version }}" class="base-stylesheet" />
+<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/select2.theme.css" as url %}{{ url|jet_append_version }}" class="select2-stylesheet" />
+<link rel="stylesheet" type="text/css" href="{% static "jet/css/themes/"|add:THEME|add:"/jquery-ui.theme.css" as url %}{{ url|jet_append_version }}" class="jquery-ui-stylesheet" />
 
 {% block extrastyle %}{% endblock %}
 {% if LANGUAGE_BIDI %}<link rel="stylesheet" type="text/css" href="{% block stylesheet_rtl %}{% static "admin/css/rtl.css" %}{% endblock %}" />{% endif %}

jet/templatetags/jet_tags.py

@@ -314,6 +314,14 @@ def get_current_jet_version():
     return VERSION
 
 
+@register.filter
+def jet_append_version(url):
+    if '?' in url:
+        return '%s&v=%s' % (url, VERSION)
+    else:
+        return '%s?v=%s' % (url, VERSION)
+
+
 @register.assignment_tag
 def get_side_menu_compact():
     return settings.JET_SIDE_MENU_COMPACT