Bend TYPO3 logging to use Monolog

[QuingKhaos]

Hook into TYPO3 logging, so it uses monolog integrated in Bartacus/Bartacus-Standard#3

[georgringer]

use my logging extension, monolog will quite sure come to core as well. so instead of doing things again and again in 3rd party tools, get together and finish it for the core and all get it? deal?