New assets for artist NSEW
- Join arrow and artist drawing
- Use separate assets for NSEW
- Pre-set width/height for proper toolbox layout
Merge pull request #794 from code-dot-org/artist_nsew_block_revision

New assets for artist NSEW
[Finishes #76465926] Handle required blocks with undeletable blocks
Merge pull request #797 from code-dot-org/uneditableRequired

[Finishes #76465926] Handle required blocks with undeletable blocks
spelling fix
[Finishes #76558840] get rid of when run from studio toolbox
remove a few of our wordsearch levels
Merge pull request #799 from code-dot-org/whenRunStudio

When run studio
Merge pull request #798 from code-dot-org/wordsearchLevels

Wordsearch levels
Merge branch 'master' of https://github.com/code-dot-org/blockly
Align step button right on step only levels when run button is hidden.