bug fixes for grid overlay, fluid layouts for 12, 16 and 24 column layouts, enhanced vertical tabs/accordion interface for theme settings

adding support for alternating settings for content zone on front and internal pages, fixing css issue with alpha/omega

final changes for a simple, D7 working version of Omega. region settings, general preprocess working perfectly

adding DRUPAL7.txt for outline of changes & issues with theme upgrade to D7, changing basics so theme will be allowed to be enabled to start debugging upgrade.