LT-259 New proactive UI (three options) for unsaved changes dialog + New API for unsaved changes module (now handlers can be attached to unsaved changes namespace) + Save measurements integration.

Packages/ohif-core/client/ui/index.js

@@ -1,6 +1,7 @@
 import './bounded/bounded.js';
 import './dialog/form.js';
 import './dialog/spatial.js';
+import './dialog/unsavedChangesDialog.js';
 import './draggable/draggable.js';
 import './dropdown/form.js';
 import './resizable/resizable.js';