erp5_advanced_ecommerce: set missing http cache

bt5/erp5_advanced_ecommerce/SkinTemplateItem/portal_skins/erp5_advanced_ecommerce/advanced_ecommerce_web.css.xml

@@ -6,6 +6,10 @@
     </pickle>
     <pickle>
       <dictionary>
+        <item>
+            <key> <string>_Cacheable__manager_id</string> </key>
+            <value> <string>http_cache</string> </value>
+        </item>
         <item>
             <key> <string>__name__</string> </key>
             <value> <string>advanced_ecommerce_web.css</string> </value>

bt5/erp5_advanced_ecommerce/SkinTemplateItem/portal_skins/erp5_advanced_ecommerce/advanced_ecommerce_web.js.xml

@@ -6,6 +6,10 @@
     </pickle>
     <pickle>
       <dictionary>
+        <item>
+            <key> <string>_Cacheable__manager_id</string> </key>
+            <value> <string>http_cache</string> </value>
+        </item>
         <item>
             <key> <string>__name__</string> </key>
             <value> <string>advanced_ecommerce_web.js</string> </value>