Added code around Publish button to be disabled for SCVMM.

Added code around Publish button to be disabled for SCVMM on VM summary screen and also code around Publish button on list view to display a flash message "Publish does not apply to VM Template" when SCVMM VM is selected from a list view.

https://bugzilla.redhat.com/show_bug.cgi?id=1138858
https://bugzilla.redhat.com/show_bug.cgi?id=1138772