The gui now sends heartbeat notifications to the server
GNS-42 - gui heartbeat frequency is now read as a config option
Remove the initial heartbeat notification as it attempts to send it before the connection is live.
Merge pull request #19 from planctechnologies/gns-40

Gns 40 - ssh key management

Main changes:

Completed image lifecycle
new instance state to distinguish between image is running and gns3-server is running
stub procedure for SSH connections
moved gns3-ias url to settings
added -gns3 suffix to image and keypair names
Merge pull request #20 from planctechnologies/gns-44

Gns 44 - Send heartbeats from GUI to server
Merge commit '930ddbc' into heartbeat
Merge pull request #99 from planctechnologies/heartbeat

Send heartbeat messages from the gui to the server