[erp5_officejs] Bootloader create global only one time

Test passed :  

https://nexedijs.erp5.net/#/test_result_module/20170926-4163AF53

/reviewed-on nexedi/erp5!414

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_bootloader_js.js

@@ -51,7 +51,9 @@ var repair = false;
         state = {},
         element_list =
           gadget.element.querySelectorAll('[data-install-configuration]');
-      window.Bootloader = gadget;
+      if (window.Bootloader === undefined) {
+        window.Bootloader = gadget;
+      }
 
       for (i = 0; i < element_list.length; i += 1) {
         state[element_list[i].getAttribute('data-install-configuration')] =

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_bootloader_js.xml

@@ -236,7 +236,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>961.57945.44138.39099</string> </value>
+                <value> <string>962.14302.13214.21742</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -254,7 +254,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1504605705.8</float>
+                        <float>1506412140.67</float>
                         <string>UTC</string>
                       </tuple>
                     </state>