Export Data Providers with every release

We need to start actively monitoring events and reyling on gtk recently used!
Advantages of exporting dataproviders into their affliated apps are:
1) Apps know more about their data than gtk.recently used provides us
2) We can focus on making datahub nothing else but an webapp monitor
3) getting closed events would provide us with some hot options such as dtecting intersection of document usages (leading to what I call expiring or dynamic tags)

However if we will go that way we should definetly know how we want to recieve our metadata about the events as well as the subjects...