Merge pull request #118 from nanan9177/maze_test

Some commits that fix things up in Turtle.
Use recursion to build up spiral.
Added the jump tooltip.
Fix jumpTooltip
Updated required blocks for Trutle 2 Level 8.
Merge pull request #119 from brandonbloom/spiral

Use recursion to build up spiral.
Merge branch 'master' into maze_test
Made the pailed blocks undeletable and uneditable.