this makes no sense - remove refresh button which was shown in bridging section under networking

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@24999 52c4871e-980c-0410-b1e0-e73912ce01f8
fix disabled state of input boxes for url filter

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@25000 52c4871e-980c-0410-b1e0-e73912ce01f8