email should have a unique index. fixes #187
email should have a unique index.
fixes #187

kayoub5/strider,Strider-CD/strider,kumaria/strider,amos6224/strider,d3ming/strider,oliversalzburg/strider,bitwit/strider,kayoub5/strider,Strider-CD/strider,Strider-CD/strider,oliversalzburg/strider,bitwit/strider,bitwit/strider,knownasilya/strider,gh0st/strider,xdissent/strider,knownasilya/strider,yonglehou/strider,yonglehou/strider,bariscicek/strider,kayoub5/strider,gh0st/strider,gh0st/strider,Strider-CD/strider,lukasberlin/strider,neoday/strider,smashwilson/strider,oliversalzburg/strider,greyhwndz/strider,SE7ENSKY/strider,Faiz7412/strider,bariscicek/strider,kayoub5/strider,arunsakthi/strider,saraf/strider,SE7ENSKY/strider,saraf/strider,d3ming/strider,xdissent/strider,bariscicek/strider,neoday/strider,TallerWebSolutions/strider,yonglehou/strider,kumaria/strider,bariscicek/strider,arunsakthi/strider,xdissent/strider,amos6224/strider,Faiz7412/strider,Strider-CD/strider,kumaria/strider,d3ming/strider,lukasberlin/strider,arunsakthi/strider,knownasilya/strider,neoday/strider,smashwilson/strider,smashwilson/strider,arunsakthi/strider,TallerWebSolutions/strider,lukasberlin/strider,knownasilya/strider,greyhwndz/strider,saraf/strider,TallerWebSolutions/strider,yonglehou/strider,greyhwndz/strider,lukasberlin/strider,greyhwndz/strider,oliversalzburg/strider,smashwilson/strider,xdissent/strider,amos6224/strider,amos6224/strider,SE7ENSKY/strider,saraf/strider,Faiz7412/strider,kumaria/strider,TallerWebSolutions/strider,cobyism/strider-on-heroku,gh0st/strider,neoday/strider,cobyism/strider-on-heroku