Add option to order search results by popularity / number of routes

When searching by area (for example El Chorro) I get a list of crags at the bottom of the sceen. This list does not give the most popular or biggest crags first. Instead might get first the least climbed non-curated crags with only a few routes. The top results vary when slightly moving the map view. Seems the top results are based on closeness to the centre of the map view.