Added API key authentication

UI/Mixins/jquery.ajax.js

@@ -0,0 +1,34 @@
+//try to add ajax data as query string to DELETE calls.
+'use strict';
+define(function () {
+
+    return function () {
+
+        var original = this.ajax;
+        this.ajax = function () {
+
+            var xhr = arguments[0];
+
+            //check if ajax call was made with data option
+            if (xhr && xhr.data && xhr.type === 'DELETE') {
+                if (!xhr.url.contains('?')) {
+                    xhr.url = xhr.url + '?' + $.param(xhr.data);
+                }
+                else {
+                    xhr.url = xhr.url + '&' + $.param(xhr.data);
+                }
+
+                delete xhr.data;
+            }
+            if (xhr) {
+                if (!xhr.headers) {
+                    xhr.headers = {};
+                }
+
+                xhr.headers["ApiKey"] = window.NzbDrone.ApiKey;
+            }
+
+            return original.apply(this, arguments);
+        };
+    };
+});