stub functions for buttons

frontend-js/src/main/js/gui/admin/MapsAdminPanel.js

@@ -152,4 +152,17 @@ MapsAdminPanel.prototype.setProjects = function(projects) {
   });
 }
 
+MapsAdminPanel.prototype.onAddClicked = function() {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.onRefreshClicked = function() {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.showEditDialog = function(id) {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.removeProject = function(id) {
+  return Promise.reject(new Error("Not implemented"));
+};
+
 module.exports = MapsAdminPanel;