Introduced the MasterController as part of working on loading catalogue information.

Need a central piece to manage the catalogue data per database to prevent loading
this multiple times. MasterController is now also used to enable reopening the
connection manager from a query window after the connection manager has been closed.

typeselectionitemmodel.cpp

@@ -0,0 +1,52 @@
+#include "typeselectionitemmodel.h"
+
+TypeSelectionItemModel::TypeSelectionItemModel(QObject *parent)
+	: QAbstractListModel(parent)
+{
+}
+
+int TypeSelectionItemModel::rowCount(const QModelIndex &parent) const
+{
+	int result = 10;
+//	if (!parent.isValid()) {
+
+//	}
+	return result;
+}
+
+int TypeSelectionItemModel::columnCount(const QModelIndex &parent) const
+{
+	int result = 1;
+//	if (parent.isValid())
+//		result = 1;
+
+
+	return result;
+}
+
+QVariant TypeSelectionItemModel::data(const QModelIndex &index, int role) const
+{
+	QVariant result;
+	if (index.isValid()) {
+		int row = index.row();
+		int column = index.column();
+		if (role == Qt::DisplayRole) {
+			if (column == 0) {
+				switch (row) {
+				case 0: result = "integer"; break;
+				case 1: result = "numeric"; break;
+				case 2: result = "timestamp"; break;
+				case 3: result = "timestamptz"; break;
+				case 4: result = "float"; break;
+				case 5: result = "double"; break;
+				case 6: result = "date"; break;
+				case 7: result = "varchar"; break;
+				case 8: result = "varchar"; break;
+				case 9: result = "varchar"; break;
+
+				}
+			}
+		}
+	}
+	return result;
+}