Merge pull request #41 from pajlada/master

Window title changed
Ignore response from leagues API.
Fix evasion display and filter.
Add rapidjson source.
Started working on transitioning to rapidjson.
Add new leagues (hopefully correct), remove old leagues.
Fix TestItem.
Fix buyout manager to work with rapidjson, enable TestShop.
Fix link colors, socket colors filter. Refactor how sockets and links colors work.
Fix MTX filter.
Fix ItemLocation and ItemsManager.
Forgot to add rapidjson_util.h
Fix MainWindow right bar item display.
Remove const for std::string's inside std::vector (oops)
Convert last remaining bits to rapidjson.
Remove jsoncpp.
Fix clang build.
Merge pull request #43 from xyzz/rapidjson

Rapidjson
Update league list.
Refactor DataManager constructor a bit.