fix "beta" image in "always use beta" dialog
fix "beta" image in "always use beta" dialog

jle33/TouchDevelop,sedouard/TouchDevelop,Aksoom-Hussain/TouchDevelop,ntoll/TouchDevelop,MetSystem/TouchDevelop,jle33/TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,jmptrader/TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,Aksoom-Hussain/TouchDevelop,CodeKingdomsTeam/TouchDevelop,jmptrader/TouchDevelop,UIKit0/TouchDevelop,MetSystem/TouchDevelop,MetSystem/TouchDevelop,jle33/TouchDevelop,imadityab/FSE-2012-TouchDevelop-old,UIKit0/TouchDevelop,UIKit0/TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,jmptrader/TouchDevelop,imadityab/FSE-2012-TouchDevelop-old,CodeKingdomsTeam/TouchDevelop,sedouard/TouchDevelop,Aksoom-Hussain/TouchDevelop,jle33/TouchDevelop,CodeKingdomsTeam/TouchDevelop,imadityab/FSE-2012-TouchDevelop-old,jle33/TouchDevelop,ntoll/TouchDevelop,sedouard/TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,ntoll/TouchDevelop,CodeKingdomsTeam/TouchDevelop,SoftwareEngineeringToolDemos/FSE-2012-TouchDevelop,jmptrader/TouchDevelop,imadityab/FSE-2012-TouchDevelop-old