add check unique user when sign in and email validation check
add check unique user when sign in and email validation check

cameron4us/SoloAlong,energene/SoloAlong,SoloAlong/SoloAlong,cameron4us/SoloAlong,AaronFilson/SoloAlong,energene/SoloAlong,SoloAlong/SoloAlong,AaronFilson/SoloAlong