listbox_field: add a <pre> tag if parameter value is multilines to save the formatting

Also fix linter

master/bt5/slapos_jio/PathTemplateItem/web_page_module/rjs_gadget_slapos_label_listbox_field_js.js

-/*globals console, window, document, rJS, RSVP, loopEventListener, i18n, Handlebars $*/
+/*globals console, window, document, rJS, loopEventListener, i18n */
 /*jslint indent: 2, nomen: true, maxlen: 80*/
 
-(function (window, document, rJS, RSVP, Handlebars) {
+(function (window, document, rJS) {
   "use strict";
   var gadget_klass = rJS(window);
 
@@ -15,21 +15,26 @@
       return {};
     })
     .declareMethod("render", function (options) {
-      var gadget = this, a, value;
+      var gadget = this, a, pre, value;
       return gadget.getElement()
         .push(function (element) {
           value = options.value;
-          if (options.value &&
-              (options.value.startsWith("http://") ||
-                 options.value.startsWith("https://"))) {
-            a = document.createElement('a');
-            a.setAttribute("href", options.value);
-            a.setAttribute("target", "_blank");
-            a.innerText = options.value;
-            value = a.outerHTML;
+          if (options.value) {
+            if (options.value.startsWith("http://") ||
+                 options.value.startsWith("https://")) {
+              a = document.createElement('a');
+              a.setAttribute("href", options.value);
+              a.setAttribute("target", "_blank");
+              a.innerText = options.value;
+              value = a.outerHTML;
+            } else if (options.value.indexOf("\n") !== -1) {
+              pre = document.createElement('pre');
+              pre.innerText = options.value;
+              value = pre.outerHTML;
+            }
           }
           element.innerHTML = value;
           return element;
         });
     });
-}(window, document, rJS, RSVP, Handlebars));
\ No newline at end of file
+}(window, document, rJS));
\ No newline at end of file

master/bt5/slapos_jio/PathTemplateItem/web_page_module/rjs_gadget_slapos_label_listbox_field_js.xml

@@ -99,7 +99,7 @@
         </item>
         <item>
             <key> <string>title</string> </key>
-            <value> <string>Gadget SlapOS Site invoice State</string> </value>
+            <value> <string>Gadget SlapOS Label Listbox Field</string> </value>
         </item>
         <item>
             <key> <string>version</string> </key>
@@ -216,7 +216,7 @@
             </item>
             <item>
                 <key> <string>actor</string> </key>
-                <value> <string>ERP5TypeTestCase</string> </value>
+                <value> <string>superthomas</string> </value>
             </item>
             <item>
                 <key> <string>comment</string> </key>
@@ -230,7 +230,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>965.40941.62497.477</string> </value>
+                <value> <string>972.17178.36781.34560</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -248,7 +248,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1519141899.05</float>
+                        <float>1544636507.97</float>
                         <string>UTC</string>
                       </tuple>
                     </state>