Hi,
here is my weekly report:
What I had planned for this week:
Extend the o.e.r.stats plugin through an Extension Point, which allows third parties to build their own metrics (own tree items and pages)
What I have done this week:
Last week I have started to build the Extension Point, first implementation of the prototype is online in Gerrit [1].
I have created an Interface (ITreeViewerExtension) which have to be implemented from other plugins. 
public interface ITreeViewerExtension {
    IDeveloperActivityPage getPage();
    String getTreeItemText();
    ITreeCategory getCategory();
}
getTreeItemText():
Defines the tree item name.
getCategory():
Here you can create your tree item structure. 
getPage():
And here you have the possibility to create your own page (parent=Composite). 
If someone want to test the current functionality, use the attachment in this mail (o.e.r.tim.testing). 
Setup:
- check out the code from [1]
 - import the plugin (o.e.r.tim.testing, see attachment) in your workspace
 - add this plugin ((o.e.r.tim.testing)) to your product (or in your "Run Configurations")
 - have "fun"
 
What I have planned for the next week:
- Optimize the "Extension Point" functionality:
 - we need here some infrastructure for own icons in third party plugins 
 - open view mechanism: at the moment I have only one page for a TreeItem, we need here more than one (every tree item needs his own page)
 
- Restructure the plugin for the Incubator project
 - Collect data for the Incubator project (bugzilla, gerrit, gsoc, mailing lists etc., see mail from Marcel)
 
Regards,Tim