kite: add additional http based heartbeat
kite: heartbeat stop fixes
kontrol: simplify heartbeat timer func
kite/handlers: small changes
kontrol/handlers: use old timer if any available
kite/heartbeat.go: heartbeat on HTTP
kontrol: enable debug mode
kontrol/heartbeat: fix typo and add doc
heartbeat: fix typos
heartbeat: don't use info for those
handler: another info -> debug conversion
Merge pull request #85 from koding/double-heartbeat

Double heartbeat