title: Any good client-side open-source dashboard framework?
body: <p>I am looking to build a client-side dashboard framework where a user can create a new dashboard, add portlets, position them along a grid system, resize, close, ....</p>
  
  <p>The dashboard look and feel should be controllable with CSS.
  I am looking for a commercial-friendly open source solution to be used to create a d3.js based  interactive dashboard system.</p>