This migration adds "Storage Locations", managed via a new System Administration panel, that can hold Station Media data, live broadcast recordings, and backups. These storage locations can be local (as they are by default) or remote via any S3-compatible service.
* Song database and entity overhaul, part 1.
* Remove Songs table from a number of qeries and reports.
* Fix references to Songs table; rewrite StationMedia processing.
* Remove song reference in queue page.
* Allow custom log level via environment variable.
- Refactor Flysystem to use constants instead of magic strings for URL prefixes
- Add audiowaveform installation to both Docker and Ansible installations
- Use audiowaveform to generate waveforms saved to disk for every track
- Load these waveforms when visiting the visual waveform editor page instead of using the browser to calculate them
- Add volume control and use app-wide storage of default volume
- Remove "beta" tag from waveform editor header
