Refgenieserver

Added
- a possibility to decouple genome archive directory and genome archive config file. `refgenieserver archive` uses new key (`genome_archive_config`) from `refgenconf`
- a genome archive config file writability check

Changed
- key `genome_archive` to `genome_archive_folder`. Backwards compatiblity is preserved (both are currently supported)

Fixed
- undefined variable referencing issue; [73](https://github.com/refgenie/refgenieserver/issues/73)

Fixed
- relationship info not being updated during specific asset archivization; [70](https://github.com/refgenie/refgenieserver/issues/70)

Changed
- order of the assets adn tags in the table in the index page: sorted alphabetically instead of oldest to newest

Added
- asset splash pages presenting all the asset attributes and related API endpoint links. Available at: `/asset/{genome}/{asset}/splash`
- archive digest API endpoint. Available at `/asset/{genome}/{asset}/{tag}/archive_digest`

Changed
- recipes are served as JSON objects, not files
- `refgenieserver archive` enhancements; related to config file locking

Added
- distribute the license file with the package
- test script
- API endpoints for serving asset build logs and asset build recipes. Available at `/asset/{genome}/{asset}/log` and `/asset/{genome}/{asset}/recipe`, respectively


Fixed
- `fastapi` - `starlette` dependency issue

Fixed
- PyPi installation problem; [59](https://github.com/refgenie/refgenieserver/issues/59)