Updated Turtle initial direction.
Merge branch 'master' into turtle_skin
Made the success check to be called everytime move is called in Maze and also at the end of the code.
Hack to fix readonly page for english
Merge pull request #203 from nanan9177/turtle_skin

Updated Turtle initial direction
Merge pull request #204 from nanan9177/hoc_level

Hoc level 19
Updated Maze Leve 2_12, 2_13, and 2_19.