Cleanup of empty classes, partial use of default export

UI/Base/Image.ts

@@ -1,20 +0,0 @@
-import {UIElement} from "../UIElement";
-
-
-export class Image extends UIElement{
-    private src: string;
-    private style: string = "";
-    constructor(src: string, style: string = "") {
-        super(undefined);
-        this.style = style;
-        this.src = src;
-    }
-    
-    InnerRender(): string {
-        if(this.src === undefined){
-            return "";
-        }
-        return `<img src='${this.src}' style='${this.style}'>`;
-    }
-    
-}

UI/Base/VerticalCombine.ts

@@ -1,28 +1,20 @@
 import {UIElement} from "../UIElement";
 
 export class VerticalCombine extends UIElement {
-    private _elements: UIElement[];
-    private _className: string;
+    private readonly _elements: UIElement[];
 
-    constructor(elements: UIElement[], className: string = undefined) {
+    constructor(elements: UIElement[]) {
         super(undefined);
         this._elements = elements;
-        this._className = className;
     }
 
     InnerRender(): string {
         let html = "";
         for (const element of this._elements) {
-            if (element!== undefined && !element.IsEmpty()) {
+            if (element !== undefined && !element.IsEmpty()) {
                 html += "<div>" + element.Render() + "</div>";
             }
         }
-        if(html === ""){
-            return "";
-        }
-        if (this._className === undefined) {
-            return html;
-        }
-        return "<div class='"+this._className+"'>" + html + "</div>";
+        return html;
     }
 }