More prints to logger

converting prints to LOGGER calls, by #737

**planetoid changes**

I made the planetoid changes in a separate commit to easily revert: the output for this file is probably parsed by some not too robust script, so review from an admin POV.

Its your call if changing this file is acceptable for the next release or should wait some other revision. 

If \ when included, a note in changelog should be added I think 

Tell me if desired to revert in my branch.

**other files changes**

Nothing strange here.

Ask for changes if needed