add missing closing label to sessions#new view
add missing closing label to sessions#new view

Lanogos/devise-bootstrap-views,mabras/devise-bootstrap-views,hisea/devise-bootstrap-views,ukasiu/devise-bootstrap-views,mabras/devise-bootstrap-views,agm1988/devise-bootstrap-views,Lanogos/devise-bootstrap-views,riskgod/devise-bootstrap-views,ukasiu/devise-bootstrap-views,hisea/devise-bootstrap-views,riskgod/devise-bootstrap-views,agm1988/devise-bootstrap-views