Feature/max limits config

I haven't got better idea how to test, that configuration (system properties) are being picked up, because Constants has static final variables. So I'm passing system properties through surefire report, that would mean that when running junit through eclipse would fail without setting up system properties. We could possibly set system properties and reload Constants through custom ClassLoader, however that could be tricky. Other option would be to change constants to methods. Let me know what do You think.