make sure number fields are treated as numbers instead of strings
Merge pull request #895 from code-dot-org/numberFields

make sure number fields are treated as numbers instead of strings
more string vs number confusion
Merge pull request #897 from code-dot-org/beeFix

more string vs number confusion
Merge remote-tracking branch 'remotes/origin/finished' into destringify_booleans
- Add blockly "true" and 'false" string-to-boolean conversion
- Add tests for blockly string coercion conversions
- Remove coercion-in-controller code
- Adjust migration timestamp to force schema run
- Change is_k1 to isK1