Introduce an AJAX button for sending test notifications instead of the checkbox (#519)

changedetectionio/static/js/notifications.js

@@ -0,0 +1,42 @@
+$(document).ready(function() {
+  $('#send-test-notification').click(function (e) {
+    e.preventDefault();
+
+    // this can be global
+    var csrftoken = $('input[name=csrf_token]').val();
+    $.ajaxSetup({
+        beforeSend: function(xhr, settings) {
+            if (!/^(GET|HEAD|OPTIONS|TRACE)$/i.test(settings.type) && !this.crossDomain) {
+                xhr.setRequestHeader("X-CSRFToken", csrftoken)
+            }
+        }
+    })
+
+    data = {
+        window_url : window.location.href,
+        notification_urls : $('#notification_urls').val(),
+        notification_title : $('#notification_title').val(),
+        notification_body : $('#notification_body').val(),
+        notification_format : $('#notification_format').val(),
+    }
+    for (key in data) {
+      if (!data[key].length) {
+        alert(key+" is empty, cannot send test.")
+        return;
+      }
+    }
+
+    $.ajax({
+      type: "POST",
+      url: notification_base_url,
+      data : data
+    }).done(function(data){
+      console.log(data);
+      alert('Sent');
+    }).fail(function(data){
+      console.log(data);
+      alert('Error: '+data.responseJSON.error);
+    })
+  });
+});
+