Add BTChip wallet plugin
Already optimized
Do not crash if no change is sent
lib.util->electrum.util
Verify proper device before signing
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into btchip
Add creation wizard, prepare for 1.4.9
Merge remote-tracking branch 'upstream/master'
Merge branch 'btchip'
1.4.9 support, better error management, fix 2fa check
update mnemonic imports
separate add_seed from create_master_keys
Merge pull request #807 from btchip/btchip

Add BTChip wallet plugin
fix #777
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/gtk.py
	gui/stdio.py