Demo project cleanup

Removed all obsolete stuff from the ng2 demo project

demo-shell-ng2/app/services/form-service.ts

@@ -1,55 +0,0 @@
-import {Injectable} from 'angular2/core';
-
-// TODO: move to some namespace
-declare var widgets: any;
-
-@Injectable()
-export class FormService {
-    getWidgetCategories() {
-        var result = [];
-        var categories = {};
-        var keys = Object.keys(widgets);
-        keys.forEach(function (key) {
-            var w = widgets[key];
-            var categoryName = w.category || 'Misc';
-            var category = categories[categoryName];
-            if (!category) {
-                category = {
-                    name: categoryName,
-                    widgets: []
-                };
-                categories[categoryName] = category;
-                //result.push(category);
-            }
-            category.widgets.push({
-                type: key,
-                name: w.name,
-                iconClass: w.iconClass
-            });
-        });
-
-        Object.keys(categories).sort().forEach(function (key) {
-            result.push(categories[key]);
-        });
-
-        return result;
-    }
-
-    getDragImage(widgetType: string): Element {
-        var w = widgets[widgetType];
-        // try getting exported drag image
-        if (w && typeof w.getDragImage === 'function') {
-            var img =  w.getDragImage();
-            if (img) {
-                return img;
-            }
-        }
-
-        // create default drag image
-        var dragImage = document.createElement('button');
-        dragImage.className = 'btn btn-default drag-image';
-        dragImage.textContent = w.name;
-        dragImage.style.minWidth = '100px';
-        return dragImage;
-    }
-}