Add IMS Content Package support to the HTML5 Viewer

[rtibbles]

Summary

• Upgrades le-utils and adds the relevant migration for the new format preset
• Adds the IMSCP_ZIP format preset as a renderable format preset for the HTML5 Viewer

References

Pre-emptive support for IMSCP import when learningequality/studio#4258 is merged - it properly handles and relies on the pre-existing entry option for HTML5 apps in order to render the relevant resource from within an IMS Content Package.

Reviewer guidance

This is a little difficult for now - but it will make testing the Studio side easier once that's merged - a bit chicken and egg!

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Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.16.0b6.dev0_git.210.g460e9fed.pex
Windows Installer (EXE)	kolibri-0.16.0b6.dev0+git.210.g460e9fed-unsigned.exe
Debian Package	kolibri_0.16.0b6.dev0+git.210.g460e9fed-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.16.0b6.dev0+git.210.g460e9fed-0.3.0.dmg
Android Package (APK)	kolibri-0.16.0b6.dev0+git.210.g460e9fed-0.1.0-debug.apk
TAR file	kolibri-0.16.0b6.dev0+git.210.g460e9fed.tar.gz
WHL file	kolibri-0.16.0b6.dev0+git.210.g460e9fed-py2.py3-none-any.whl

[rtibbles]

Test failure was a known flaky test :/

[nucleogenesis]

LGTM. Funny that you have to enumerate every choice even though you're just adding one 😆

[rtibbles]

Yeah, and it's also not even a database enforced constraint, so the migration doesn't make that much sense either!