Initial implementation of Locale framework#1122

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dpvc wants to merge 3 commits intodevelopfrom locale

+418-103

Commits on Jul 27, 2024

Initial implementation of Locale framework, with updates to asyncLoad to handle json files, and simplifications for components/bin/copy config data
dpvc
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Only use Pacakge if MathJax is defined
dpvc
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Commits on Aug 22, 2024

Don't require the list of localizations, just try to load them. Also, remove English default messages and use the en loclaization for them. These were requested by Volker's review.
dpvc
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