Fix #63, twice position attributes load requests each time a position is selected, meaning wasted ressources and a 'reset effect' on the form in the first seconds.
Fix #63, twice position attributes load requests each time a position
is selected, meaning wasted ressources and a 'reset effect' on the
form in the first seconds.

loconomics/loconomics,loconomics/loconomics,samwa/loconomics,samwa/loconomics,samwa/loconomics,samwa/loconomics,loconomics/loconomics,loconomics/loconomics