/// <summary>
 /// Sets the status of the levels as desired (usefull when the upgrade levels status are loaded
 /// from a XML file)
 /// </summary>
 public void SetLevelsStatus(TimeGateUpgradeStatus level1, TimeGateUpgradeStatus level2, TimeGateUpgradeStatus level3, TimeGateUpgradeStatus level4)
 {
     btnLevel1.Status = level1;
     btnLevel2.Status = level2;
     btnLevel3.Status = level3;
     btnLevel4.Status = level4;
 }
 /// <summary>
 /// Sets the status of the levels as desired (usefull when the upgrade levels status are loaded
 /// from a XML file)
 /// </summary>
 public void SetLevelsStatus(TimeGateUpgradeStatus level1, TimeGateUpgradeStatus level2, TimeGateUpgradeStatus level3, TimeGateUpgradeStatus level4)
 {
     btnLevel1.Status = level1;
     btnLevel2.Status = level2;
     btnLevel3.Status = level3;
     btnLevel4.Status = level4;
 }