[FIX] __unicode__ on volunteer status
[FIX] __unicode__ on volunteer status

cateee/fosdem-volunteers,FOSDEM/volunteers,cateee/fosdem-volunteers,cateee/fosdem-volunteers,FOSDEM/volunteers,FOSDEM/volunteers,cateee/fosdem-volunteers,jrial/fosdem-volunteers,jrial/fosdem-volunteers,jrial/fosdem-volunteers,FOSDEM/volunteers,jrial/fosdem-volunteers