Closes #

Changes proposed in this pull request:

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How to test the feature manually:

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Pull request checklist:

- [ ] clear commit messages
- [ ] code manually tested
- [ ] unit tests written (optional if too hard)
- [ ] documentation updated

[Additional information can be found in the documentation](https://github.com/FreshRSS/FreshRSS/tree/master/docs/en/developers/04_Pull_requests.md).
