tweak receive layout
bundle dependencies in 'packages' dir. use qrcode instead of pyqrnative
access to global configuration using set_config and get_config
parse_scriptSig
link point of sale plugin with receive tab
fix imports in pos plugin
fix: remove imports
fixedSize qrcode widget
transaction show_qr
show popup if qr scanner not enabled
gui tweaks
fix save_qrcode
Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/qt/main_window.py
	gui/qt/paytoedit.py
	gui/qt/qrcodewidget.py
	gui/qt/qrtextedit.py
	plugins/labels.py
	plugins/pointofsale.py
	setup.py