DeckException fix, some code refinement
- Optimized import, idk, what "com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiNilLoader" was :)
- Message field in an Exception derived class is redundant, Exception
  already has it, so calling Exception ctor by super(...) is enough.
- Code reformat. Should we check "Reformat code" checkbox in IntelliJ Commit Changes window, Before Commit section?
Merge branch 'master' of https://github.com/h0tk3y/russian-cheat