Revision 1662

Make the table interface distinguish between row ids (an integer
that uniquely identifies a row) and row ordinals (a simple row
count from 0 to NumRows() - 1)

* Thuban/Model/postgisdb.py (PostGISTable.RowIdToOrdinal)
(PostGISTable.RowOrdinalToId): New methods to conver between row
ids and row ordinals
(PostGISTable.ReadRowAsDict, PostGISTable.ReadValue): New keyword
parameter row_is_ordinal to indicate whether the row parameter is
the row id or the ordinal

* Thuban/Model/transientdb.py (TransientTableBase.RowIdToOrdinal)
(TransientTableBase.RowOrdinalToId)
(AutoTransientTable.RowIdToOrdinal)
(AutoTransientTable.RowOrdinalToId): Same new methods as in
PostGISTable.
(TransientTableBase.ReadRowAsDict, TransientTableBase.ReadValue)
(AutoTransientTable.ReadRowAsDict, AutoTransientTable.ReadValue):
Same new parameter as in PostGISTable.

* Thuban/Model/table.py (DBFTable.RowIdToOrdinal)
(DBFTable.RowOrdinalToId, MemoryTable.RowIdToOrdinal)
(MemoryTable.RowOrdinalToId): Same new methods as in PostGISTable.
(DBFTable.ReadValue, DBFTable.ReadRowAsDict)
(MemoryTable.ReadValue, MemoryTable.ReadRowAsDict): Same new
parameter as in PostGISTable.

* Thuban/UI/tableview.py (DataTable.RowIdToOrdinal)
(DataTable.RowOrdinalToId): New methods to convert between row ids
and row ordinals.
(TableGrid.SelectRowById): New method to select a row based on its
ID as opposed to its ordinal
(DataTable.GetValue, TableGrid.OnRangeSelect)
(TableGrid.OnSelectCell, LayerTableGrid.select_shapes)
(QueryTableFrame.OnQuery, QueryTableFrame.get_selected)
(LayerTableFrame.__init__): Convert between row ids and row
ordinals as appropriate

* test/postgissupport.py (PostGISDatabase.__init__): Add
doc-string.
(PostGISDatabase.initdb): The optional third item in a tuple in
tables is now a (key, value) list with additional arguments to
pass to upload_shapefile
(upload_shapefile): New parameter gid_offset to allow gids that
are not the same as the shapeids in the shapefile
(PostgreSQLServer.get_default_static_data_db): Use the new
gid_offset to make the gids in landmarks 1000 higher than the
shapeids in the shapefile

* test/test_viewport.py
(TestViewportWithPostGIS.test_find_shape_at_point): Adapt to the
new shapeids in the landmarks table

* test/test_transientdb.py
(TestTransientTable.run_iceland_political_tests)
(TestTransientTable.test_transient_joined_table): Add tests for
the new table methods and new keywords arguments.

* test/test_postgis_db.py
(TestPostGISTable.test_read_row_as_dict_row_count_mode)
(TestPostGISTable.test_read_value_row_count_mode)
(TestPostGISTable.test_row_id_to_ordinal)
(TestPostGISTable.test_row_oridnal_to_id): New test for the new
table methods and the new arguments
(TestPostGISShapestorePoint.test_shapes_in_region)
(TestPostGISShapestorePoint.test_shape_raw_data)
(TestPostGISShapestorePoint.test_shape_points)
(TestPostGISShapestorePoint.test_shape_shapeid)
(TestPostGISShapestorePoint.test_all_shapes)
(TestPostGISTable.test_simple_query)
(TestPostGISTable.test_simple_query)
(TestPostGISTable.test_simple_query)
(TestPostGISTable.test_read_value)
(TestPostGISTable.test_read_row_as_dict): Adapt to the new
shapeids in the landmarks table

* test/test_memory_table.py
(TestMemoryTable.test_read_row_as_dict_row_count_mode)
(TestMemoryTable.test_read_value_row_count_mode)
(TestMemoryTable.test_row_id_to_ordinal)
(TestMemoryTable.test_row_oridnal_to_id): New test for the new
table methods and the new arguments

* test/test_dbf_table.py
(TestDBFTable.test_read_row_as_dict_row_count_mode)
(TestDBFTable.test_read_value_row_count_mode)
(TestDBFTable.test_row_id_to_ordinal)
(TestDBFTable.test_row_oridnal_to_id): New test for the new table
methods and the new arguments