[rendejrs_ui] Floatfield formats well non-editable integers

Fixes /#/bug_module/20171208-5E8D43

/reviewed-on !523

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_floatfield_js.js

@@ -59,8 +59,8 @@
         state_dict.text_content = state_dict.value.toString();
         if (state_dict.text_content !== "" && thousand_sep !== "") {
           tmp = input_format_re.exec(state_dict.text_content);
-          // tmp == [full-number, sign, integer-part, .decimal-part, ...]
-          state_dict.text_content = tmp[1] + toTriplets(tmp[2]).join(thousand_sep) + tmp[3];
+          // tmp == [full-number, sign, integer-part, .decimal-part (can be undefined because of permissive regexp), ...]
+          state_dict.text_content = tmp[1] + toTriplets(tmp[2]).join(thousand_sep) + (tmp[3] || "");
           tmp = undefined;
         }
       }

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_floatfield_js.xml

@@ -230,7 +230,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>963.37747.27048.56217</string> </value>
+                <value> <string>963.40246.8021.32017</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -248,7 +248,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1511321647.29</float>
+                        <float>1512458225.4</float>
                         <string>UTC</string>
                       </tuple>
                     </state>