modified .gitignore file to specifically ignore the spigot.jar library in the 'libs' directory
added config.yml option to 'cache_entire_database', and edited PersistConfig to store that new option, and RealisticBiomes.java to actually load it (or load a default)
removed the 'plant_chunk_idx" from the CREATE TABLE statements for rb_plants in both PlantManager.java and the convert_sqlite_to_mysql_rb.py script since we never use that index and its just taking up time and space