Detailed Status improvement

[magnumripper]

After resuming a session that had already cracked some hashes, consider that figure when printing the "new" of Succesful guesses the first time (instead of just printing the total once again). Same for other fields where possible.

[magnumripper]

This would make it easy to see the performance difference after increasing/decreasing the number of threads, or changing to a different GPU.

We could also add figures for eg. "last minute", that would work for subsequent status prints too.