Fix regression test filenames
Do not include block transaction index in history
Allow filtering transaction history by asset symbol (resolves #475)
Improve some wallet error messages (resolves #488)
Merge branch 'master' of github.com:BitShares/bitshares_toolkit

Conflicts:
	tests/regression_tests/wallet_multipart_transfer_test/transfer.log
	tests/regression_tests/wallet_multipart_transfer_test/wallet_multipart_transfer_test.log
	tests/regression_tests/wallet_multupart_transfer_test/wallet_multupart_transfer_test.log