fixed transparency issue with thang image
Merge branch 'master' of https://github.com/codecombat/codecombat
Merge branch 'master' of https://github.com/codecombat/codecombat
Merge branch 'master' of https://github.com/codecombat/codecombat
Merge branch 'master' of https://github.com/codecombat/codecombat
Merge branch 'master' of https://github.com/codecombat/codecombat