Fix "Other requets from IP" bug on requests w/ XFF

Appears to have been introduced with the new XFF system.  This
particular bug affects any request with XFF headers that are trusted
further than one level down.

Another bug exists when all IPs in the XFF headers as well as the
origin are trusted proxies.  Not fixed in this commit.
Fixes bugs when all IP in a rq are trusted proxies

Fixes bugs when all IPs in a request and its XFF chain are listed as
trusted proxies; specifically, IP links not showing for origins that are
themselves trusted proxies, and the origin not being listed as the
originating IP when the origin is a trusted proxy itself.  This is an
edge case of sorts, but at least it will be handled gracefully.