paragliding_flight_crawler

brief: index all igc tracks.

todo:

• inconsistent flight duration for 20207923 (-21h40mn) and for 10 others

ffvl/20207923,JULIEN CHRISTY,29/03/2017,Ozone - Swift 4,https://parapente.ffvl.fr/sites/parapente.ffvl.fr/files/igcfiles/2017-03-29-igcfile-69085-102384.igc,triangle,Col-de-Bleine,Nord Bleine,90.4,-21h40mn,108.48

• inconsistent flight distance for

incosistent flight id : https://parapente.ffvl.fr/cfd/liste/vol/20213572