Eliminate dependency on CLDR and minor fix for WoT code generation

[k-toumura]

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Proposed changes

• Eliminate dependency on CLDR to shrink install footprint
• Minor bug fix on URL template processing in WoT code generation

Checklist

• I have read the contribution guidelines
• For non-bugfix PRs, I have discussed this change on the mailing list/slack team.
• I have run grunt to verify the unit tests pass
• I have added suitable unit tests to cover the new/changed functionality

[coveralls]

Coverage increased (+0.2%) to 65.278% when pulling d940867 on node-red-hitachi:fix-urltemplate into d914f7e on node-red:master.

[kazuhitoyokoi]

@k-toumura Thank you for your quick response!