Fix registration without email

service/user/cookieHelper.go

@@ -118,6 +118,9 @@ func SetCookieHandler(w http.ResponseWriter, email string, pass string) (int, er
 // RegisterHanderFromForm sets cookie from a RegistrationForm.
 func RegisterHanderFromForm(w http.ResponseWriter, registrationForm formStruct.RegistrationForm) (int, error) {
 	email := registrationForm.Email
+	if email == "" {
+		email = registrationForm.Username
+	}
 	pass := registrationForm.Password
 	log.Debugf("RegisterHandler UserEmail : %s", email)
 	log.Debugf("RegisterHandler UserPassword : %s", pass)

service/user/user.go

@@ -46,14 +46,14 @@ func SuggestUsername(username string) string {
 
 func CheckEmail(email string) bool {
 	if len(email) == 0 {
-		return true
+		return false
 	}
 	var count int
 	db.ORM.Model(model.User{}).Where("email = ?", email).Count(&count)
-	if count == 0 {
-		return false // duplicate
+	if count != 0 {
+		return true // error: duplicate
 	}
-	return true
+	return false
 }
 
 // CreateUserFromForm creates a user from a registration form.