catch db connection exception and rethrow with a clearer message
catch db connection exception and rethrow with a clearer message

wesley1001/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web