Bug in profile list of most used categories

[udemi]

There seems to be a bug in the list of most used categories. my most used one is definitely not social :)

[André Palma]

This is now fixed.

The aggregation method on the user priorities has been reviewed.

Due to the fact that there is 3 different indexes to fetch aggregations from we can never guarantee that this will always be 100% right. However the approximation should be good enough.