[dev] Kronolith idea

[Duck]

Kronolith has the posibility to show tasks in the calendar. I see, it has even 
an inactive birthday display code. But there are other applications that have 
time associated data (whups, hermes etc). 

Why not introduce an general api call listTimeObjects (like listCostObjects 
is) common to all modules? So Kronolith will query all modules that can 
provide timed data. Or trick the user pref configuration to offer the user to 
select which type of data to display from the available.

Duck