Moving Hearthstone finding logic to the Helper class in preparation for mac support
Merge branch 'master' of https://github.com/chippydip/HearthLog
Helper::GetHearthstoneVersion cleanup
* switched to proper #ifdef flags for windows/macos
* fixed memory leak in windows version
* add config lookup and file prompt for non-default mac locations
* switched to wx wrapper classes for CoreFoundation objects to handle automatic memory cleanup
* mac version string parsing switch to wx code as a result
* final version logging moved to a separate method to share between both versions
* added comments to both version

Hopefully this still compiles on a mac!