[#253] payment protocol - first working version
Merge branch 'master' into payments

Conflicts:
	BitcoinKit
	Hive/Controllers/HISendBitcoinsWindowController.m
disable QR scanning when send window editing is locked
[#253] check payment request for errors
Merge branch 'master' into payments
[#253] show recipient's certificate name if available
[#253] use bitcoin url label/message as a fallback
[#253] don't auto-focus locked address field
Merge branch 'master' into payments

Conflicts:
	Hive/Controllers/HISendBitcoinsWindowController.m
simplified send window initialization

always configure the window after the nib is loaded
disable "Send Bitcoin" if contact has no addresses
[#253] display memo from the recipient
[#253] "Pay with Bitcoin" window title for payments
[#253] error handling for payment request loading
Merge branch 'master' into payments

Conflicts:
	BitcoinKit
	Hive/Controllers/HISendBitcoinsWindowController.h
	Hive/Controllers/HISendBitcoinsWindowController.m
[#253] error handling for payment sending
[#253] hide avatar in send dialog for payments
[#253] added lock icon for secure payments
[#253] memo box border/padding tweaks
[#253] use bitcoin uri message as memo