Merge remote-tracking branch 'upstream/master'

Conflicts:
	gui/qt/installwizard.py
Litecoin: bump version to 1.9.8.3
Litecoin: add ExMoney exchange
Merge branch 'master' of https://github.com/pooler/electrum-ltc into electrum-myr

Conflicts:
	gui/qt/installwizard.py
	plugins/exchange_rate.py
merge