Merge in RI0's french translation

Merge in RI0’s french translation and correct JSON errors.
remove build_serialport.sh from package.json

Make this branch the same as evil-mad/robopaint
Make this the same as evil-mad/robopaint

T
Correct invalid JSON and remove whitespace
Fix spanish translation
Merge in other changes
Update robopaint.fr.json

Update of line 167
Error correction of the double opt3 (line 166 and 167)
already corrected in the English and Spanish versions