cleaning things up. Moving flags to their own enum
removed useless,empty file
finished cleaning BetterEconomy.java
added comments to CommandHandler and removed unused and useless ConfigManager
changed currencies and ores to be sets instead of lists, since order was irrelevant. In the future it might be a good idea to have currency names map to the currencies
fixed a double load, and a memory leak: the file saving thread kept being duplicated on reload