Changed updater message on OS X

The new updater code cannot restart HearthStats automatically on OS X, so I've updated the message to ask users to do it manually.
Updated to version 0.17.1
Merge remote-tracking branch 'HS/master' (bump version 0.17.1)

Conflicts:
	pom.xml
	uploader-osx/pom.xml
	uploader-win/pom.xml
	uploader/pom.xml