Fix bad initializer
Do not crash when asked to export private keys
Fix behavior when calling get_master_public_key from an external context
setup.py: Install qrscanner (it's a library now)
Add default language for mnemonic

Add en as default language for mnemonic
Merge pull request #864 from wozz/default-lang

Add default language for mnemonic
Merge pull request #856 from btchip/fixerrorsigning

Fix bad initializer
Merge pull request #857 from btchip/deny_export_private_key

Do not crash when asked to export private keys
Merge pull request #858 from btchip/labelfix

Fix behavior when calling get_master_public_key from an external context
Merge pull request #859 from PabloCastellano/master

setup.py: Install qrscanner (it's a library now)
Merge branch 'master' of git://github.com/spesmilo/electrum