Adds ScreenScribe implementation to utils' logger

[tdeekens]

Adds a scribe to the utils' logger which prints every log statement onto the screen. This scribe will be used in lmvc to replace all the library's print-statements.

Checklist

• Add ScreenScribe class and implement it
• Update config.json and sample-config.json
• Test the scribe

[coveralls]

Coverage remained the same when pulling d7933aa on feature/logger-screenscribe into 05aa001 on master.

[coveralls]

Coverage remained the same when pulling 6915fb3 on feature/logger-screenscribe into 05aa001 on master.

[tdeekens]

@konstantinos-chronis ready for review.

[konstantinos-chronis]

In order to make the code more clear to read I propose the following

if($this->_omitMessage($level))
return false;

And then continue with the rest of the code

[tdeekens]

This is how currently every scribe homogeneously handles its local logging level. Matter of taste I guess. I'll ask my inner coding-zen later.

[coveralls]

Coverage increased (+0.35%) when pulling 344abd0 on feature/logger-screenscribe into 05aa001 on master.

[tdeekens]

@konstantinos-chronis smaller(..) is added and called by AbstractScribe. I don't like this is[A-z] thing for functions returning booleans. It's in the docs anyways and the IDE will tell you.

[konstantinos-chronis]

smaller should be used here too

[tdeekens]

Changed. 👍 Happy now?

[coveralls]

Coverage increased (+0.35%) when pulling 27b960d on feature/logger-screenscribe into 05aa001 on master.