Add bandung_districts, districts, and cases_gis files to exercise_data
Commit Indonesia, Indonesia_32750, movements_32750, and PointData to
exercise_data folder
Add: Provinces, Regions, Subdistricts, Sul_cases_sthn, Sul_sthn_dist,
Sul_sthn_prov, Sul_sthn_subdist, Sulawesi, Sulawesi_dist,
Sulawesi_dist_32750, VillagePolyBarSin_32750 to excercise_data
Commit updated foreword, introduction/intro and preparation,
qgis_plugins/fetching_plugins and plugin_examples,
vector_analysis/basic_analysis, index, and reproject_transform rst
files.