Update the tests and test data.

* Update these tests to use test data in InaSAFE source:
	* test_get_layer_attribute_name
	* test_is_polygonal_layer
* Update the test data: boundaries/district_osm_jakarta.shp. Remove some unused attributes and add 2 attributes (TEST_INT, TEST_STR) for testing
* Remove make_polygon_layer and make_point_layer function that are not used anymore
* Add new hazard point data: Marapi volcano for testing. We don't have any point hazard data.

Signed-off-by: Akbar Gumbira <akbargumbira@gmail.com>