4oD: Improved programme data processing

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@507 98b4c264-8670-11de-a133-9d545b4d7674
ITV: Improved programme data processing

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@508 98b4c264-8670-11de-a133-9d545b4d7674
ITV/4oD: Added support for "Use Current Webpage"

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@509 98b4c264-8670-11de-a133-9d545b4d7674