statistics: Added club/airport-filter to show correct number of pilots
statistics: Added club/airport-filter to show correct number of pilots

RBE-Avionik/skylines,shadowoneau/skylines,kerel-fs/skylines,RBE-Avionik/skylines,shadowoneau/skylines,snip/skylines,Turbo87/skylines,Turbo87/skylines,kerel-fs/skylines,skylines-project/skylines,snip/skylines,snip/skylines,shadowoneau/skylines,RBE-Avionik/skylines,Turbo87/skylines,skylines-project/skylines,Harry-R/skylines,RBE-Avionik/skylines,Harry-R/skylines,kerel-fs/skylines,TobiasLohner/SkyLines,TobiasLohner/SkyLines,shadowoneau/skylines,skylines-project/skylines,Harry-R/skylines,Harry-R/skylines,skylines-project/skylines,Turbo87/skylines,TobiasLohner/SkyLines