restructuring, working on password reset email

next steps:
- create reset url and add it to the translation fill map
- implement message translation
- implement otp validation and login

messages/src/main/java/de/srsoftware/umbrella/message/SqliteMessageDb.java

@@ -10,8 +10,8 @@ import static java.lang.System.Logger.Level.WARNING;
 import static java.text.MessageFormat.format;
 
 import de.srsoftware.umbrella.core.UmbrellaException;
+import de.srsoftware.umbrella.core.model.UmbrellaUser;
 import de.srsoftware.umbrella.message.model.Settings;
-import de.srsoftware.umbrella.user.model.UmbrellaUser;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;