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
refactoring / cleaning maven build
removed a bit more unused stuff
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
ready for maven release plugin
[maven-release-plugin] prepare release uploader-parent-0.17.2
Merge branch 'master' into deck_overlay

Conflicts:
	pom.xml