KWidget: Fixed flashvar ks check in getKalturaThumbUrl
Kwidget: more descendant check fixes
Fixed jQuery dependency of kWidget.api

* Also jQuery noConflict no longer removes window.jQuery for client
pages that don't include jQuery already.
added "forceFlash" flag
Cache entry data to local varible
Merge branch '1.8.9_Jul_21' into OmnitureDurationNullFix
Merge pull request #448 from kaltura/OmnitureDurationNullFix

Omniture duration null fix