Changed "Would you like to leave the desktop running so you can
reconnect later?" to "Would you like to leave your current session
running so that you can reconnect later?", as per CVLFAB-630.

Wojtek also requested adding "Note: unused sessions are killed
after XXX."  I'm not sure how best to address this.  Chris says
they will be terminated after 32 years, but what do we tell
the user?  "Unused desktop sessions will be lost when the VM
is next rebooted." ?