changes name of return value in disable_magic_quotes_if_enabled
adds merge_headers to WikkaResponse and makes headers property case-insensitive
updates WikkaBlob run method to return WikkaReponse and removes buffering from WikkaWebService run_wikka_handler method
updates handler classes to return WikkaResponse objects
updates process_error method to display full page template; includes several tweaks to make this possible including making request a property of WikkaWebService rather than a passed var