ConsolePrinter: print whole test output on fail [Closes #111]

Digging out an important part of test output would be complicated. It can be reimplemented again when some use-case appears.

Related commits:
243bf44ba4a6fc0adca1b5f5e1152675afb01ea0
9a730f22242103af58233c542bc4098df9afa5ec
532cb31c254b044c9f7a15a4b90b9abbc9e77a91