[fix] Restore ajax calls with CSRF protection

Author: sman591

app/assets/javascripts/csrf.js

@@ -0,0 +1,7 @@
+document.addEventListener('turbolinks:load', function() {
+  $.ajaxSetup({
+    beforeSend: function(xhr) {
+      Rails.CSRFProtection(xhr);
+    },
+  });
+});

app/assets/javascripts/manage/application.js

@@ -7,17 +7,23 @@
 //= require_directory ./lib
 
 function applicationReady() {
-  $(".selectize").selectize();
-  $("select[data-bulk-row-edit]").bulkRowEdit();
+  $('.selectize').selectize();
+  $('select[data-bulk-row-edit]').bulkRowEdit();
   $().bulkRowSelect();
-  $("body").chartkickAutoReload();
+  $('body').chartkickAutoReload();
   setupDataTables();
   setupHighcharts();
   $('[data-toggle="popover"]').popover();
   $('[data-message-live-preview="textarea"]').messageLivePreview();
   setupSimpleMde();
   setupEmailEvents();
   setupManageForms();
+
+  $.ajaxSetup({
+    beforeSend: function(xhr) {
+      Rails.CSRFProtection(xhr);
+    },
+  });
 }
 
-document.addEventListener("turbolinks:load", applicationReady);
+document.addEventListener('turbolinks:load', applicationReady);