Display notice to users after upgrading from <r681 about list-update limits.

git-svn-id: https://peerblock.googlecode.com/svn/trunk@682 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2
Disabling (temporarily?) the "update lists only once per 7 days" checkbox from the 429 list-update error popup.

Leaving the code in there just commented out, for now, in case we change our minds again.  We can permanently remove it later, along with the additional supporting code.

git-svn-id: https://peerblock.googlecode.com/svn/trunk@684 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2
Updated list-update error-check wording.

git-svn-id: https://peerblock.googlecode.com/svn/trunk@686 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2
Force list-cache generation if List Manager enabled lists have changed.

This addresses a problem in that if a user is update-limited, then they disable a list in their List Manager, then re-enable that same list, then close the List Manager . . . they would not get that list loaded.  We'll now load the already-downloaded copy of that list, even if we can't download a new copy.

git-svn-id: https://peerblock.googlecode.com/svn/trunk@688 d3e0e2f6-51e0-11de-b413-c5e99dc0a8e2