[pve-devel] Do not use the term 'VM' as a generic name for containers and qemu VMs

[Emmanuel Kasper]

changes since first patch:
 * call gettext() properly with a string instead of dynamic parameter ( would have been hard to translate ... )
 * pass the whole sentence message to gettext() instead of breaking it in word groups
  This should help doing a better translation especially for right-to-left languages