make filter search case-insenstive.
make filter search case-insenstive.

closes #49.

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