Seed file updated to new User model
Updated internationalization settings due to changes in rails default behavior. This change keeps the original behavior.
therubyracer gem not needed (or supported) by windows
Handle the case where powering on/off is not supported by a given ServerManager (don't show on/off button in dropdown)
Libvirt Server Manager only supported by linux at this time
Added ability to manually refresh server manager (ie. clear cache). Added AWS start/stop commands