Issue #1 #2 #4 are addressed in this commit. Added another window with controls for key management. Simple ASCII encryption

KeyManagementWindow.h

@@ -0,0 +1,25 @@
+#ifndef KEYMANAGEMENTWINDOW_H
+#define KEYMANAGEMENTWINDOW_H
+
+#include <QDialog>
+#include <QComboBox>
+#include <QLineEdit>
+
+class QComboBox;
+class QLineEdit;
+
+class KeyManagementWindow : public QDialog
+{
+	Q_OBJECT
+public:
+	KeyManagementWindow(QWidget* parent = 0);
+
+	void setContentsOfComboBox();
+private slots:	
+	void test();
+private:	
+	QComboBox* comboBoxOfKeys;
+	QLineEdit* valueOfKey;
+};
+
+#endif