checklist for first release

- [x] add biosample link to bbmri (see https://github.com/ecrin-github/mdrmine-bio-sources/issues/18)
- [x] home page: adjust size of title and subtitle
- [x] home page: display release number and date
- [ ] template: populate
- [x] list: populate (e.g. list of observational trials, trials on covid, multinational trials etc)
- [ ] datasets: can we improve? add date, license, etc see humanmine
- [x] summary fields (webconfig-model)
- [x] report pages (focus only on study?)

Review the two unchecked items: populating the template and improving datasets with dates, licenses, and other metadata. Compare the current behavior with HumanMine, then define the specific changes and checks needed for both items to consider the first release checklist complete.

Written by the indexing model from the issue text.