Clarification on use of "thumbs-up" and "thumbs-down" sightings buttons

[morallo]

Some of our users have pointed out that the thumbs-up/down interface for sightings may be confusing. They understood that the "thumbs-up" button was to be used to signal any kind of sighting (true or false positive), and then the thumbs-down was to be click additionally in case of false positive.

Even though that was not my understanding, by reading the documentation, together with the icon tooltips, I think the wording may be a bit ambiguous.

I open this issue to get confirmation from the developers/designers that the "canonical use" is:

• Thumbs-up for signalling only a true positive.
• Thumbs-down for signalling a false positive.

If confirmed, I can propose a pull-request to clarify this point in the documentation.

Also, a change in the icon tooltips could be considered to clarify this use. I will do a PR for that in the corresponding repo.