added signup template
added signup template

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