Complete adding Hausa language (ha)

[mapmeld]

Hausa is now a file in the develop branch's msg/json directory, but json_to_js.py hasn't yet been run to convert JSON -> JS.

Translations file in develop branch: https://github.com/google/blockly/blob/develop/msg/json/ha.json

Demo: http://mapmeld.com/blockly/demos/toolbox/index.html?lang=ha

Blockly Games: https://mapmeld.com/blockly-games/appengine/maze.html

[rachel-fenichel]

This will happen as part of the next release.

Blockly Games is in a separate repo; you may want to file an issue there as well.

[mapmeld]

Thanks!