Recipient label UTF-8 fix
Recipient label UTF-8 fix

If recipient label had UTF-8 characters, clicking Send would trigger a
decoding error and woudln't send.

bmng-dev/PyBitmessage,debguy0x/PyBitmessage,debguy0x/PyBitmessage,hb9kns/PyBitmessage,timothyparez/PyBitmessage,hb9kns/PyBitmessage,hb9kns/PyBitmessage,hb9kns/PyBitmessage,bmng-dev/PyBitmessage,debguy0x/PyBitmessage,debguy0x/PyBitmessage,bmng-dev/PyBitmessage,timothyparez/PyBitmessage,timothyparez/PyBitmessage,timothyparez/PyBitmessage