Fixed bug when opening existing cloud projects
added a method to retrieve an instance by id
fixed instance state handling
Add support for running IOU devices on cloud instances
Merge pull request #37 from planctechnologies/gns-126

On cloud instances, only show the green icon when the build process is complete
Merge branch 'dev' into gns-123
Merge branch 'master' into dev
Merge branch 'dev' into gns-125
Add support for running Qemu devices on a cloud instance
Base for VirtualBox linked clones (not completed yet).
Merge pull request #138 from planctechnologies/dev

Fix cloud instance ready indicator
New host node (cloud with all Ethernet & TAP interfaces added).
Adds "open a project" and "recent projects" buttons to the new project dialog.
Option to deactivate the new project dialog at startup.
Allows Qemu VM to have 0 interface.
Option to allow console connections to any local IP address when using the local server.
return None instead of raising KeyError
populate model lazily, working even when first call to list_instances fails
pass the instance id all the way down to the cloud server
show number of devices running on each cloud instance, fixes gns-34
signal when an instance was selected/deselected