Remove toLowerCase(), fixed #474

Remove toLowerCase(), fixed #474
Merge pull request #479 from ceefour/patch-2

Remove toLowerCase() for Java6, fixed #474
Fixes #478 - Add 'property' as a posible name attribute of <meta> tag

(cherry picked from commit b7ff006293a4d44d4f99e625fc9c0c225f8c7bc4)
Merge branch 'master' into wicket-7.0.0-M1