* fix style for article view.
 * fix style of product preview image.
 * fix logo style for small screens.
 * fix css class name on hide msgbox.
 * ajust style of page header for themes.
 * change chanzhi logo with css and remove logo image.
 * ajust footer style for themes.
 * ajust code.
 * fix style of comment form.
 * add getCustomParams funtion to ui/model.