"content" management refactoring

[smadbe]

Description

A set of changes in preparation for future feature requests:

• introduce a default skill as the default activity (not used yet)
• introduce a new store: navigation, for instance just keeping the last activity, skill and group visited (to be used by the left menu later)
• use store for group state in the same way it is already done for items (and users) and replacing the group datasource

Work better than before:

• if error in group breadcrumbs (non existing/non visible group), the breadcrumb is "self-healed"
• when starting observing a user, activity suggestion is shown

For the rest, we rely on the e2e tests and basic manual testing to ensure the behavior is still ok.

[smadbe]

[auto-generated message] E2E test report on: https://algorea-static.s3.eu-central-1.amazonaws.com/branch/refactor-navigation/playwright-report/index.html

[smadbe]

e2e tests are not passing currently but I don't know what is related with the PR and what is not...

[Iloveall]

Rebase should fix e2e for PR

[smadbe]

[auto-generated message] E2E test report on: https://algorea-static.s3.eu-central-1.amazonaws.com/branch/refactor-navigation/playwright-report/index.html

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ Error: Unexpected missing id from group param groupRouteFromParams(deployments/tez-prod/2.48.... View Issue
• ‼️ Error: Unexpected missing id from group param groupRouteFromParams(deployments/tez-prod/2.48.... View Issue

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