Decouple collections from app builds

[manuq]

Fetch the collection JSON manifests from Github release. Currently we serve them as static files which are included in the wrapper apps (Android, Windows) at build time. This way the collections release will be decupled from software releases.

PRs:

• Stop bundling collections kolibri-installer-android#150
• Stop bundling collections endless-key-app#122
• Decouple collections from app builds #610

[manuq]

Ready for review: #611

I also improved the code by initializing on first API call, rather than on module import.

[manuq]

I also created PRs for the wrapper apps, so they stop bundling the collections.

[erikos]

Let's move to the next iteration to not risk any issues before we get the Ladybug release out.

[manuq]

Let's move to the next iteration to not risk any issues before we get the Ladybug release out.

Sounds good! I'm also unassigning myself so others can take it from here. The PR already got good feedback from @dylanmccall @dbnicholson and @pwithnall .

[dylanmccall]

To smooth the transition here, I am proposing two more PRs which only affect the build system:

• Get collections from the latest release kolibri-installer-android#152
• CI: Get collections from the latest release endless-key-app#124

I also created a new release for endless-key-collections: https://github.com/endlessm/endless-key-collections/releases/tag/v0.2.0.

[dbnicholson]

Last night I whipped up a PR to publish the endless-key-collections JSON to GitHub Pages. I think we should go back to @manuq's PRs and use https://endlessm.github.io/endless-key-collections/ as the base URL.