Main Changes in Picok 2
Collections
It is now possible to add complete predefined sets of Portlets as a single tab to the viewport. We call these Tabs collections. This allows to push whole sets of Portlets.
Viewport Proportions
With Collections it is now Possible to have tabs with only two columns with the Proportions of 2:1 This allows wider Portlets.
Adding Content
Adding Content has been redone completely. All content is now shown in one page. It is now possible to search for Portlets. Portlets can also be Added to categories. These categories are not preset but can be defined freely. this allows to have a category for new Portlets or specially featured ones.
Transport Layer
It is now possible to have portlets subscribe to other portlets. This allows to trigger an action in one portlet as a callback of an action in another portlet. The typical usecase would be a search portlet that searches the Content of several portlets. Clicking on a result in the search portlet would open the detail view of the Result in the Corresponding portlet, automagically installing the portlet would it be missing.
Javascript Clean up
The main javascript file was in a pitiful condition. We cleaned that up and put everything into a Module Pattern, which is more in accordance to the spirit of YUI.
Event Handling Improvements
There were some Major Improvements on Event Handling for the basic functionalities of portlets. This means better performance especially in IE.

