CSS reorganizations:

  -  'captionCSS' option removed. Instead 'theme_name' css class name
  -  'bgClass' option removed.
  -  'closeIconCSS' option removed. Instead 'jlthemeswitcher-close-icon' css class name
  -  'headerCSS' option removed.  Instead 'jlthemeswitcher-header' css class name
  -  'imageHoverCSS' option removed.  Instead '.jlthemeswitcher a img:hover' css style rule
  -  'themeItemCSS' option removed.  Instead 'ul.jlthemeswitcher li.theme_item' css style rule
  -  'themeswitcherCSS' option removed.  Instead 'div.jlthemeswitcher' css style rule
  -  'titleCSS' option removed.  Instead '.jlthemeswitcher-title' css style rule
  -  some css rule move to the CSS file
update the Cookie plugin
new option: autoThemeVersionReplace