Merge pull request #319 from nanan9177/blockly_fix

Update the total number of blocks only once in the header.
Added Turtle 5 as cool artist level.
Merge pull request #320 from nanan9177/tutorial

Added Turtle 5 as cool artist level.
Bump version to 0.0.119
Bump version to 0.0.120
Translations
Fixes 61343512. Don't set width and height until we are ready to animate.
Use visibility instead of width height.
Merge pull request #322 from tobyk100/master

Fixes 61343512. Don't set width and height until we are ready to animate...
Fix video click behavior.
Translations
Merge pull request #323 from tobyk100/video

Fix video click behavior.
20-H curriculum small fixes.
Merge pull request #324 from nanan9177/tutorial

20-H curriculum small fixes.
Bump version to 0.0.121
New blockly drop with arrow fix.
Bump version to 0.0.122
need to tweak timing on initial resize, + remove 1200 pixel max width
Updated image assets for white pixels, and bad resizing.
Blockly drop with sound fix.
Merge pull request #326 from nanan9177/maze_skin

Updated image assets for white pixels, and bad resizing.