Changes

Work in progress: moving Opds from app datasource to school datasource.
 (commit: 119e8ff)

Work in progress: convert App List screen to using Opds publications instead of Respect App Manifest.
 (commit: 4656739)

Work in progress: convert App List screen to using Opds publications instead of Respect App Manifest.
 (commit: c2db0f8)

Work in progress: model Respect App manifest using OPDS.

Add database migrations.
 (commit: a513cc6)

Add architecture and system to handle Opds for both external sources (eg. compatible apps) and internal (school playlists).
 (commit: d0a2110)

Work in progress making OpdsFeed a writable entity as per other entities in the school database.
 (commit: 31241d0)

Work in progress making OpdsFeed a writable entity as per other entities in the school database.
 (commit: 1553ef2)

Implement write support for OpdsFeed including handling etag and last-modified header for non-RESPECT generated feeds.
 (commit: 83570f1)

Add OpdsFeed validation helper implementation.
 (commit: f3416e4)

Make OpdsFeed writable to handle playlists: work in progress.

1) Update OpdsRespectRepositoryIntegrationTest.kt to use OpdsFeedDataSource
2) Update LaunchAppUseCase to use an OpdsPublication instead of a RespectAppManifest.
 (commit: 511867b)

Update documentation on OpdsFeedDataSource on how external/internal data is handled.
 (commit: 0b5e01f)

Make Opds Feed writable: make initial working client - server integration test.
 (commit: a4a3eac)

Move OpdsPublication data source to follow same naming pattern.
 (commit: edff29c)

Update OpdsPublicationDataSourceRepository to follow pattern as per OpdsFeedRepository.
 (commit: e408883)

OpdsPublicationDataSource improvements

Fix mistake in query that prevented links on publication being saved correctly into database.

Update OpdsPublicationDataSourceHttp.kt so it can handle RespectAppmanifest and convert into an OpdsPublication.
 (commit: ee1643a)

Improvements to handling OpdsPublication and OpdsFeed / related entities.

Put writing/reading of OpdsFeed and Opds in transactions.

Ensure app dependency injection provides validation helpers for http fetching of OpdsFeed and OpdsPublication (ensure that if-modified-since/if-none-match work as expected).
 (commit: cc9c881)

Add 304 response support to UstadCacheImpl.

When a request to the cache includes its own http validation info (if-not-modified since and/or if-none-match), and the response is the cache is fresh, then the cache itself can reply immediately with an empty 304 not modified response.
 (commit: 156d9f6)

Add unit test for UstadCache to verify 304 response is returned correctly when incoming request has validation info.
 (commit: 44088c6)

Update UstadCacheInterceptor.kt to respond 304 directly if the underlying request has its own cache validation info and a stale response is validated over the network.
 (commit: c9f0db3)

Add test checking 304 not modified response received using interceptor if cache validation headers are used.
 (commit: c5c0aff)

Remove CompatibleApp Datasource (replaced by using OpdsPublication).
 (commit: b8c5c1f)

Remove CompatibleAppEntity from database.
 (commit: 205b330)

Update ci-run-maestro.sh and school_init.js with option to disable automatic school creation for end-to-end tests.

This option is required to run an end-to-end test of self-registration of a new school.
 (commit: f5e206f)

Fixes for AppLauncher screen.
 (commit: 0d01526)

Update opds packages in datasource-db and datasource-http to use school.opds package.
 (commit: 2ab5551)

Update database migration files.
 (commit: 03416dd)

Initial home tabs design.
 (commit: ece17bb)