New settings fields to make it easier for users to configure I-Blocklist Subscription based URLs

git-svn-id: https://peerblock.googlecode.com/svn/trunk@647 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2
Reverted r646 - no GPL code permitted in our source-tree

git-svn-id: https://peerblock.googlecode.com/svn/trunk@648 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2