cubicweb #1669144 'c-c shell' has no proper stdout encoding [open]

priorityminor
typebug
done in<not specified>
load0.100
load left0.000
closed by#5d5b3a865eb1 [ctl] set proper encoding for sys.stdout/sys.stderr. Closes #1669144
patch[ctl] set proper encoding for sys.stdout/sys.stderr [applied]