Added lines output for image listing.

Added imagelist.vmcatcher.dc:date:expired to replace the 'imagelist.expired' variable.
Added  * With commmand "vmcatcher_image -l -f lines" added line output 'subscription.dc:date:updated',
 * With commmand "vmcatcher_image -l -f lines" added line output 'subscription.dc:description',
 * With commmand "vmcatcher_image -l -f lines" added line output 'subscription.dc:identifier',
 * With commmand "vmcatcher_image -l -f lines" added line output 'subscription.hv:uri',
 * With commmand "vmcatcher_image -l -f lines" added line output 'subscription.sl:authorised'
 * With commmand "vmcatcher_image -l -f lines" added line output 'imagelist.vmcatcher.dc:date:expired'
updated
show information when no current image
better listing when images have expired
updated changelog