The Limesurvey's new feature Central Participant's Panel needs to be ported into the YII branch. In this task you will port the CPDB attribute feature. 

Task Steps:

• Install LimeSurvey - create a small survey. 
• Understand the basic differences between the current token attribute system and the new attribute system . 
• Understand how it interacts with the current system.
• Port the attribute system into the new framework.
• Discuss the patch with your mentor and ask for feedback.
• Check-in your changes into the LimeSurvey svn trunk.
• Done!