changed configuration file to properties

Changed "settings.txt" file to regular Properties file to make it not dependent from the storing order.
All config load and changes is made from Config.setX/.getX
I would like to determine why this balance is returning null, eg, if we are getting an HTTP 4XX or 5XX, so we don't brute force API calls. I'm going to do some more investigation before I pull this in and see if we can make this more effective!