Moved bugs from numbers to names again.

Combined bugs 4 and 15.
Added assumption: response time is good enough.

I assume that "request response time" is an acceptable proxy for "last
service update time," which might be crazy.
Added possible tests for the response time validation issue.
Merge branch 'master' of github.com:NickDaly/FreedomBuddy
Merge remote-tracking branch 'upstream/master'