m2ee.py: sort imports a-z
use utf-8 for stdout to fix m2ee about (and more)

When piping the "m2ee about" command it will fail, because the string
contains utf-8 content and has to be converted to ascii. Now we change
stdout to a utf8 converter so we can keep using print without any
modifications.
Merge remote-tracking branch 'origin/utf8-output-fix' into develop