Facility command and task improvements

[bjester]

Summary

• Adds new NamespacedCacheProxy to enable efficient clearing of cache keys related to Facility dataset data
• Clears namespaced dataset cache after deleting a facility and before syncing
• Updates the default chunk size for facility tasks to be 200 and makes them not cancellable
• Updates sync command to not aggregate progress tracking total
• Updates frontend to make progress indeterminate for certain facility task stages
• Updates morango to 0.5.1 which has deserialization improvements

Reviewer guidance

• From the CLI:
  1. Set up another Kolibri with some real facility data
  2. On a second Kolibri instance, with fresh database, issue the kolibri manage sync command pulling from the first
  3. Verify facility data in Kolibri
  4. On the second instance, issue the kolibri manage deletefacility command deleting the facility
  5. On a second instance, issue the kolibri manage sync command pulling again to pull the same facility
  6. No warnings or errors should occur
• From the frontend:
  1. Initiate a sync with the Kolibri bet server
  2. Verify all facility import/sync tasks show indeterminate progress when not sending or receiving data

References

learningequality/morango#84
#7127

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Contributor Checklist

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• Contributor has fully tested the PR manually
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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

[bjester]

@rtibbles I created this proxy class to generically handle tracking cache keys and clearing them.

[codecov]

Codecov Report

Merging #7187 into release-v0.14.x will increase coverage by 0.00%.
The diff coverage is 75.47%.

Impacted Files	Coverage Δ
...ri/core/auth/management/commands/deletefacility.py	0.00% <0.00%> (ø)
kolibri/core/auth/management/commands/sync.py	0.00% <0.00%> (ø)
kolibri/core/tasks/api.py	44.35% <ø> (ø)
...ets/src/views/FacilitiesPage/FacilityTaskPanel.vue	0.00% <0.00%> (ø)
kolibri/core/utils/cache.py	92.94% <94.73%> (+15.16%)	⬆️
kolibri/core/auth/management/utils.py	48.14% <100.00%> (ø)
kolibri/core/auth/models.py	91.35% <100.00%> (+0.02%)	⬆️
kolibri/core/tasks/utils.py	92.59% <100.00%> (-0.52%)	⬇️
...i/plugins/device/assets/src/views/syncTaskUtils.js	64.70% <100.00%> (+0.70%)	⬆️
kolibri/core/assets/src/core-app/client.js	10.90% <0.00%> (-1.10%)	⬇️
... and 21 more

[rtibbles]

Two potential issues with the new namespaced cache class.