* add some wallpapers.
* update font-family in zentao.css.
* fix windowHeadHeigt in config.
* fix file system errors.
* add style for scrollbar.
* fix window z-index.
* fix leftbar app-menu height.
* auto resize window.
* update window html template.
* shortcut can toggle show window.
* add taskbar shortcut html template.
* update guidelines.html.
* support open app in new browser window.
* fix shortcut status.
* fix fullscreen mode.
* fix fullscreen mode.
* fix all app list.