Fixed NullPointerException when loading certain cards from HearthStats.net
Updated version numbers to v0.17.3 (pre-tagging)
Updated version numbers to v0.17.3 (post-tagging)
Merge branch 'master' of
https://github.com/HearthStats/HearthStats.net-Uploader

Conflicts:
	uploader/src/main/scala/net/hearthstats/CardUtils.scala