Moved out GetTypeString() from OTTransaction.
Moved out SetupBoxReceiptFilename functions from OTTransaction.
Moved out LoadBoxReceipt from OTTransaction.
Moved out VerifyBalanceReceipt from OTTransaction into api.
Removed unused function.
Moved out VerifyBoxReceiptExists from OTTransaction.
Comment and formatting cleanup.
Merge pull request #82 from murrekatt/develop

Refactoring OTTransaction