add virStorage, virStream support
Merge pull request #1 from hopkings2008/master

update add filter function
Merge pull request #2 from hopkings2008/master

fix display layout error
minor fix
1. ping connection alive or create new connection; 2. close ws,vc in proxy
change defer position
noVNC set title by hostname
fixed conflict
use local cache for vms, reduce get method usage.