hooks and workflow for 2of3 wallets
remove hardcoded seed
don't change default_wallet_path
transaction: add_signature(), is_complete() methods
fix: public instead of private
save cold seed
Accept FreeBSD OS
Merge pull request #647 from enriquefynn/master

Accept FreeBSD OS
Litecoin: update exchange rates in the background
Litecoin: add Bitfinex and OKCoin exchanges
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/qt/installwizard.py
Litecoin: add BitcoinVenezuela exchange