[code] Fixed SelectableTableView selection problem.

If adding a script fails, the selectableTableView should select the "Add
script" line.

Change-Id: I373cdfa0afcc334e4bf306b1cee4bfb817417980

escher/src/selectable_table_view.cpp

@@ -33,6 +33,12 @@ void SelectableTableView::reloadData() {
   int col = selectedColumn();
   int row = selectedRow();
   deselectTable();
+  /* FIXME: The problem with calling deselectTable is that at this point in time
+   * the datasource's model is very likely to have changed. Therefore it's
+   * rather complicated to get a pointer to the currently selected cell (in
+   * order to deselect it). */
+  /* As a workaround, datasources can reset the highlighted state in their
+   * willDisplayCell callback. */
   TableView::reloadData();
   selectCellAtLocation(col, row);
 }