[dev] Adding contact to nag task [Patch]

[Mike Cochrane]

> ----- Message from chuck at horde.org ---------
> Quoting j.huinink at wanadoo.nl:
> 
> > Attached you will find a zip-file with changes to turba and nag that
> > allow a user to add a contact to a nag task. A reference to the contact is
> > stored with the nag task.
> 
> It seems to me that we almost need a generalized Horde metadata framework
> for handling things like this. Instead of modifying every application's data
> storage to do this - and contacts aren't the only link I can think of - we
> could have one Horde storage for links like this, and applications would
> know how to look up and display/follow links.
> 
> Make sense?

Lots :-) 

Against tasks you could store email addresses, also you could reference an email
or similar. I would like to implement vTodo's as well but that would require a
lot more fields to store required info, if a reference to a vTodo could be make
then it would be easier.

- Mike :-)