Merge pull request #27 from ChrisBoesch/master

update
minor update on selection

affected pages are controller and selecquest
Merge pull request #28 from ChrisBoesch/master

update
resolved practice drag and drop game
Merge pull request #41 from ruijunhuang2010/master

update
change default practice game to beginner python
Merge pull request #42 from ruijunhuang2010/master

update
Merge pull request #16 from ChrisBoesch/master

updating my repo on 08/06