fix playground import
fix playground import

git-svn-id: 2cf55447cea94972d775c94cce66c944ede0459c@350 c400ca83-b69d-9dd7-9705-49c6b8615e23

TechplexEngineer/EasyJ4FRC,adrgerez/ardublockly,kallex/blockly,adrgerez/ardublockly,bollwyvl/Blockly,carlosperate/ardublockly,tobyk100/blockly-trunk,tobyk100/blockly-trunk,CocoMake7/CocoBlockly,tjpalmer/blockly,Khan/blockly,tobyk100/blockly-trunk,jadonk/blockly-bonescript,CocoMake7/CocoBlockly,Khan/blockly,tjpalmer/blockly,kallex/blockly,TechplexEngineer/EasyJ4FRC,TechplexEngineer/EasyJ4FRC,bollwyvl/Blockly,peterkinmond/mazely,tobyk100/blockly-trunk,adrgerez/ardublockly,CocoMake7/CocoBlockly,peterkinmond/mazely,carlosperate/ardublockly,TechplexEngineer/EasyJ4FRC,carlosperate/ardublockly,jadonk/blockly-bonescript