Move EE specific code to their respective places

@DouweM This is a by-product from !2435 (merged) which should reduce future conflicts. Tests are not moving though :(

assigned to @DouweM

changed milestone to %9.5

@dzaporozhets Please review this as well? Thanks!

@godfat nice one, thanks!

approved this merge request

added 105 commits

87c18617...300898f0 - 104 commits from branch master
f2190750 - Merge remote-tracking branch 'ee-com/master' into js-reduce-ce-ee-conflicts

@godfat I will update this MR with recent master and merge if green

approved this merge request

enabled an automatic merge when the pipeline for f2190750 succeeds

merged

mentioned in commit b64b16ca

@dzaporozhets Thank you for taking care of this, and sorry for forgetting to check pipeline on this one :o

What does this MR do?