Added the jump tooltip.
Updated required blocks for Trutle 2 Level 8.
Merge branch 'master' into maze_test
Made the pailed blocks undeletable and uneditable.
Merge pull request #121 from nanan9177/maze_test

Maze test
Abstract injection code to base.js from <app>.js, include defaults.
Add callout system which displays parameterized callouts and uses session storage to only show one time.
Fixed faultly default logic.
Added onInitialization callback.
Moved callout code to dashboard.
Added comment.