Issue #318: Fix formatting problem

Printing a float with a specific precision and a % at the end in a setw
context is painful.
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
updated fc to add user log
creating user_appender that will send messages from the user log to the CLI status message and make them available to RPC
Implementing rpc call batch, to loop apis in one rpc call, fixed #349. And fix one typo of blockchain_ ruby generator, and json commas
merge from upstream/master
Merge pull request #352 from HackFisher/master

Implement rpc call batch, to loop apis in one rpc call, fix some coffee script rpc generation typo
updating wallet_db to properly hide its cached state in private data
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
Ensure proper cleanup on wallet creation, opening and closing (resolves #347)
Merge branch 'master' of github.com:BitShares/bitshares_toolkit

Conflicts:
	libraries/wallet/include/bts/wallet/wallet_db.hpp
	libraries/wallet/wallet.cpp
	libraries/wallet/wallet_db.cpp