Allow empty passwords because in webui we are not showing the passwor…

…d field so, initially it will be empty

#2212

de.metas.swat/de.metas.swat.base/src/main/java/de/metas/adempiere/modelvalidator/AD_User.java

@@ -42,6 +42,13 @@ public void checkPassword(final I_AD_User user)
 		}
 
 		final String password = user.getPassword();
+
+		// NOTE: Allow empty passwords because in webui we are not showing the password field so, initially it will be empty  
+		if(password == null || password.isEmpty())
+		{
+			return;
+		}
+
 		Services.get(IUserBL.class).assertValidPassword(password);
 	}