store emails even if password resets are disabled

there are other reasons to store email addresses now, so this is no
longer a just requirement.

api.go

@@ -378,7 +378,8 @@ func (app *appContext) NewUser(gc *gin.Context) {
 			}
 		}
 	}
-	if app.config.Section("password_resets").Key("enabled").MustBool(false) {
+	// if app.config.Section("password_resets").Key("enabled").MustBool(false) {
+	if req.Email != "" {
 		app.storage.emails[id] = req.Email
 		app.storage.storeEmails()
 	}