replace deprecated user.team -> user.membership.team
replace deprecated user.team -> user.membership.team

- also force the user to be logged in to create a new team

trinitronx/coderwall,coderwall/coderwall,ronaldotijucas/coderwall,trinitronx/coderwall,wiserfirst/coderwall,coderwall/coderwall,agileknight/coderwall,sekouzed/coderwall,DylanKojiCheslin/coderwall,seuros/coderwall,pombredanne/coderwall,pushkar-mishra/coderwall,wiserfirst/coderwall,pushkar-mishra/coderwall,pombredanne/coderwall,sekouzed/coderwall,pombredanne/coderwall,trinitronx/coderwall,agileknight/coderwall,ronaldotijucas/coderwall,ronaldotijucas/coderwall,alouanemed/coderwall,assemblymade/coderwall,alouanemed/coderwall,DylanKojiCheslin/coderwall,assemblymade/coderwall,coderwall/coderwall,ronaldotijucas/coderwall,pushkar-mishra/coderwall,sekouzed/coderwall,wiserfirst/coderwall,alouanemed/coderwall,wiserfirst/coderwall,sekouzed/coderwall,assemblymade/coderwall,agileknight/coderwall,assemblymade/coderwall,seuros/coderwall,DylanKojiCheslin/coderwall,trinitronx/coderwall,seuros/coderwall,pushkar-mishra/coderwall,pombredanne/coderwall,alouanemed/coderwall,seuros/coderwall,agileknight/coderwall,coderwall/coderwall