Reimplement wallet_get_transaction_history (resolves #13)
Reimplement no echoing when entering passphrases (resolves #29)
Merge branch 'master' of github.com:BitShares/bitshares_toolkit

Conflicts:
	libraries/cli/cli.cpp
	libraries/wallet/wallet.cpp
Merge pull request #86 from vikramrajkumar/master

CLI updates