* Added Grid 24 + Grid 16 columns background with jquery toggle
   * using zen_id_safe for additional semi unique menu_item classes
   * sprites added for search and grid toggler
   * Remove separator.png
   * Separate ads support as optional in ads.css, disabled by default
   * Added README, LICENSE and CHANGELOG files
   * Correct cropped tables on administration, and set it to visible overflow
   * Fine-grained organization of CSS selectors, clear separation of layout and decorations
   * Split the holy grail technique into separate body classes for extensibility
           - and easier maintenance
   * Added 3 additional holy grail alternative column widths apart from defaults:
           - grail-140x300 || grail-160x220 || grail-170x170
   * Add Theme-specific settings to plaingrail administrations (admin/build/themes/settings/plaingrail):
           - Optional width alternatives during theme development
           - Optional borders and sidebar-left background color
           - Optional Ad Unit Guidelines and Universal Ad Package
           - Optional grail-overrides.css activation for safe upgrades
           - Optional grail-devwith.css activation for dev purposes

   * Make holy grail-devwidth.css deletable once custom ready grail-overrides.css set up