Refreshing number of observations and number of species per observer

[pisum]

@Wouter

I think iNaturalist first checks which 500 observers have contributed the most observations and then when you switch to “species” number, you get a ranking of those same 500 people.

see https://forum.inaturalist.org/t/cutoff-for-2023-top-500-exceeds-6-000-observations/47901/27