seo_friend 6.x-1.0-beta6

#597468: Google Analytics module not detected by kepol: google analytics naming convention
#656100: warning: preg_match() expects parameter 2 to be string, array given in /htdocs/omnitechnics/includes/bootstrap.inc on line 777. by kepol: preg_match fix
#679178: referrers report hangs by kepol: check for empty urls in referrers report
#655662: Seo image friendly by kepol: add imagefield_tokens to seo modules list
#649550: Invalid duplicates in reports by kepol: duplicate fix
#653630: No page_title content by kepol: no page_title content
#660584: No nodewords content by kepol: handle nodewords data structure
* by kepol: add featured_content to list of SEO modules
* by kepol: limit node words report to type='node' only for now