Remove unused variable
ISO C++ forbids variable length array
Fix warning for DeskList copy constructors

Using pointers for classes derived from QObject would be the best idea.
Hide unused parameters in common/ to avoid warnings
Servatrice: add prototypes for local functions
Hide unused parameters in cockatrice/ to avoid warnings
Fix signed/unsigned comparision
Hide unused parameters in oracle/ to avoid warnings
Reorder items initialization to match the order in class declaration
Declare useless virtual dtor for polymorphic classes