Refactor patches uploading

This patch moves patches uploading functionality from the outdated
HTTP_Upload package to a dedicated service class in the app.

Additional changes in

Refactor patches uploading

This patch moves patches uploading functionality from the outdated
HTTP_Upload package to a dedicated service class in the app.

Additional changes in this context:
- Functionality concerning retrieving patches data from database has
been moved to a separate repository classes.
- Some missed bugs fixed when uploading patches and no developer info
were recorded.
- Obsoleting patches functionality is now working again.
- Added a simple unit test.

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