Reduce references to Transcript

[Ducasse]

We should avoid to make direct references to Transcript but use self traceCr or friends.

Example

....
     Transcript show: 'ljklkjlkj' cr

into

...
   'ljklkjlkj' traceCr

[MarcusDenker]

I am sure there is an issue already for this

[MarcusDenker]

Ah, this was https://github.com/pharo-project/pharo/issues/4161, it was closed (having fresh issues is nice sometimes)

What we should do:

• make a list of the (not. many) cases left
• add a release test