message: Fix: make the context menu display on viewer tabs.
diff: @@ -34,7 +34,7 @@ import * as ViewerElementTypes from './viewers/ViewerElementTypes';
  import { EtViewerTab } from './ViewerTab';
  import { PtyIpcBridge } from './PtyIpcBridge';
  import { ExtensionManager, injectExtensionManager } from './extension/InternalTypes';
  -import { ConfigDatabase, SESSION_CONFIG } from '../Config';
  +import { ConfigDatabase, SESSION_CONFIG, injectConfigDatabase } from '../Config';
  import { trimBetweenTags } from 'extraterm-trim-between-tags';
  import { NewTerminalContextArea } from './NewTerminalContextArea';
  import { CommandAndShortcut } from './command/CommandPalette';
  @@ -561,6 +561,7 @@ export class MainWebUi extends ThemeableElementBase implements AcceptsKeybinding
  const viewerTab = <EtViewerTab> document.createElement(EtViewerTab.TAG_NAME);
  viewerTab.setFontAdjust(fontAdjust);
  injectKeybindingsManager(viewerTab, this._keybindingsManager);
  + injectConfigDatabase(viewerTab, this._configManager);
  viewerTab.setTitle(embeddedViewer.getMetadata().title);
  viewerTab.setTag(embeddedViewer.getTag());
  