speed up verification view

Author: timonegk

imagetagger/imagetagger/annotations/static/annotations/js/verification.js

@@ -109,6 +109,23 @@ function calculateImageScale() {
     })
   }
 
+  function loadSingleAnnotation(id, fromHistory) {
+    let params = {
+      annotation_id: id,
+    };
+    $.ajax(API_ANNOTATIONS_BASE_URL + 'annotation/loadone/?' + $.param(params), {
+      type: 'GET',
+      headers: gHeaders,
+      dataType: 'json',
+      success: function (data) {
+        continueLoadAnnotationView(data.annotation, fromHistory);
+      },
+      error: function () {
+        displayFeedback($('#feedback_connection_error'))
+      }
+    })
+  }
+
   /**
    * Scroll image list to make current image visible.
    */