The CDE Bundle 1.0 RC3 comes with a Navigation Menu Component, which introduces a menu that allow you to browse the complete Pentaho solution repository (non-hidden folders).
I tried to use the component but it does not appear in the preview of the dashboard. After some googling I found the following post:
The problem is related to the component definition. To fix it, I opened the file NavigateMenuRender.xml (solution/system/pentaho-cdf-dd/resources/base/components/) and replaced ‘navigateMenu’ with ‘navigator’
Now, you are able to use this component and navigate from one dashboard to another. It may looks like: