[sork] change to vacation module

[Brian Diggle]

Changing the operation of the vacation message module
so that current state is reflected would be a useful change.

I.e. When a vacation message has been previously set
 the module reflects this and displays the currently set
vacation message with an option to modify or cancel. 

Also, when the vacation message is not set, this is
indicated and the option is given to set up a vacation message.

Brian.
________________

Brian Diggle
WWW Development and Support
Information Systems Services
University of Leeds

email: b.w.diggle@leeds.ac.uk
phone: 0113 2335842
www:   http://www.personal.leeds.ac.uk/~eclbwd