Write conditions for data reuse

[lenhoanglnh]

• This can be a good starting point (but we should probably adapt it): https://en.wikipedia.org/wiki/Wikipedia:Copyrights
• I think that it would be good to have a pledge for use for good.
• We must list any data reusing entities somewhere on the website. This adds credibility to Tournesol and helps red-flag misuses.
• Finally, we should discuss the incentives caused by an (influential) data reuse: if an algorithm A reuses the Tournesol database in a very influential and non-strategyproof manner, then Tournesol contributors may care about the impact of algorithm A, and may be incentivized to participate strategically, thereby endangering the trustworthiness of the database. We should encourage the use of the Licchavi framework (link to the paper pending...) or of the Tournesol scores only.