Le-utils

What's Changed
* Enforce strict ordering on label metadata lists to allow ordering to be used for bit generation for bitmasks
* Add quiz mastery model
* Add modalities constants for QUIZ and CUSTOM_NAVIGATION
* Enforce name uniqueness across all metadata labels


**Full Changelog**: https://github.com/learningequality/le-utils/compare/v0.1.33...v0.1.34

* Add support for extended metadata labels
* Create kolibri-constants npm package for JS exports of extended metadata labels

* Revert document kind update for Zim files

Added
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* ZIM file format constants

Adds
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* Format presets for QTI zip files

Fixed
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* Fixed critical issue that broke licenses constant