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Fix potential issue with naming and merged changes from techplexengineer to ensure headless works

1) Tamil translations to Blockly from generally accepted conventions …

adding additional type annotations

Also fix updating of toolbar after loading Blockly.

1) Tamil translations to Blockly from generally accepted conventions of ezhillang.org and other implementations of Tamil programming scripts.
2) Resolves issue #144 on google/blockly

Add UUID generator. Sync with main repository

Sync with main repository

Add support for google closure library 

When the closure library is installed by npm, it is named "google-closure-library", however it is named "closure-library" in build.py. When both blockly and closure are installed by npm, they are in the same folder so theoretically theoretically blockly should be able to build. Formatting and indentation might be a bit off as I edited this using the github editor. 

This ```python
search_paths = calcdeps.ExpandDirectories(
      ["core", os.path.join(os.path.pardir, "closure-library")])
``` might need further revision to account for the additional naming. Maybe a try statement?

Update with main repository

improve type annotations

Fixed toolbox categories don't support touch. Issue #202.

This is a terrible idea, but I generally allow developers wide latitude
in foot-shooting.