Fix position of VmDetail
Fix position of VmDetail

So it stays visible when scrolling the list of VMs.

mareklibra/userportal,matobet/userportal,mkrajnak/ovirt-web-ui,mkrajnak/ovirt-web-ui,oVirt/ovirt-web-ui,mkrajnak/ovirt-web-ui,mareklibra/userportal,oVirt/ovirt-web-ui,mareklibra/userportal,matobet/userportal,matobet/userportal,mareklibra/userportal,oVirt/ovirt-web-ui,matobet/userportal,mkrajnak/ovirt-web-ui