Make server side pprint the default pretty printer

[PEZ]

In #1621 we made client side calva the default pretty printer. That has many benefits, but also an important drawback: Evaluating infinite sequences never returns a result. Because the length limit is applied on the results (which will never happen).

This can be a bit puzzling when it happens, especially for beginners with Clojure. Even myself, who have some Clojure under my belt now, wondering for a few seconds what was going on when first attempting to record this video:

Run.to.the.Hills-Clojure.mp4

Credit for the code goes to @orestis and other fine folks over at Clojurians. See this tweet:

https://twitter.com/orestis/status/1509553038268243976