Code review in Randomizer and FakeCode

+ Added UniqueSelect(...) generic method to Randomizer. It randomly
selects 'm' elements of a list and returns a new sublist.
Guys! If you can make use of that somewhere, use it, it's quicker than
"foreach + new list". Vili! I have rewritten one place in FakeCode,
where you use it.
However, the execution is still slow...