Collection of small fixes and improvements

- Selections stay clearly visible when focus changes to other widget
- Autoresize columns
- Table properties view now correctly allows selection in both columns and draws selection correctly
- Tables can be sorted again and now by any column

pglab/PropertyProxyModel.cpp

@@ -102,3 +102,8 @@ void PropertyProxyModel::setActiveRow(const QModelIndex &row)
 	activeRow = row.isValid() ? row.row() : -1;
 	emit dataChanged(index(0, valueColumn), index(rowCount(QModelIndex()), valueColumn), QVector<int>() << Qt::DisplayRole);
 }
+
+Qt::ItemFlags PropertyProxyModel::flags(const QModelIndex &index) const
+{
+	return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
+}