message: Remove the extra scrollbar from the Ace based text viewer.
diff: @@ -32,7 +32,7 @@ import {ViewerElement} from '../viewers/ViewerElement';
  import * as ViewerElementTypes from '../viewers/ViewerElementTypes';
  import {emitResizeEvent as VirtualScrollAreaEmitResizeEvent, SetterState, VirtualScrollable} from '../VirtualScrollArea';
  -import { ExtratermAceEditor } from "extraterm-ace-terminal-renderer";
  +import { ExtratermAceEditor, TerminalRenderer } from "extraterm-ace-terminal-renderer";
  import { Command, DefaultCommands, Document, Editor, EditSession, MultiSelectCommands, Renderer, Position, UndoManager } from "ace-ts";
  const VisualState = ViewerElementTypes.VisualState;
  @@ -158,7 +158,7 @@ export class TextViewer extends ViewerElement implements Commandable, AcceptsKey
  this._aceEditSession = new EditSession(new Document(""));
  this._aceEditSession.setUndoManager(new UndoManager());
  - const aceRenderer = new Renderer(containerDiv, { injectCss: false, fontSize: null });
  + const aceRenderer = new TerminalRenderer(containerDiv);
  aceRenderer.setShowGutter(false);
  aceRenderer.setShowLineNumbers(false);
  