[erp5_web_renderjs_ui] Listbox: Reduce number of DOM modification

Try to reduce possible errors when 2 functions tries to update the listbox DOM

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_listbox_html.html

@@ -10,8 +10,6 @@
     <script src="renderjs.js" type="text/javascript"></script>
     <script src="jiodev.js" type="text/javascript"></script>
     <script src="handlebars.js" type="text/javascript"></script>
-    
-
 
     <!-- custom script -->
     <script src="gadget_erp5_field_listbox.js" type="text/javascript"></script>

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_listbox_html.xml

@@ -234,7 +234,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>954.45675.44850.53452</string> </value>
+                <value> <string>954.47421.47694.22459</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -252,7 +252,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1476956055.1</float>
+                        <float>1476967547.86</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_listbox_js.xml

@@ -236,7 +236,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>954.46086.29232.63761</string> </value>
+                <value> <string>954.47559.38051.59921</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -254,7 +254,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1476887535.66</float>
+                        <float>1476976330.15</float>
                         <string>UTC</string>
                       </tuple>
                     </state>