Add the trim as well for the user creation

lib/user.go

@@ -1,6 +1,8 @@
 package trantor
 
 import (
+	"strings"
+
 	log "github.com/cihub/seelog"
 	"gitlab.com/trantor/trantor/lib/database"
 
@@ -42,7 +44,7 @@ func createUserHandler(h handler) {
 	} else if pass == "" {
 		h.sess.Notify("Registration error!", "The password can't be empty", "error")
 	} else {
-		user := h.r.FormValue("user")
+		user := strings.TrimSpace(h.r.FormValue("user"))
 		err := h.db.AddUser(user, pass)
 		if err == nil {
 			h.sess.Notify("Account created!", "Welcome "+user+". Now you can login", "success")