Organize Report Cards Comment Codes (2)

- display multiple MPs comment codes for All Courses comments
- Column "Comments" by default
- Display MP short name if more than 2 MPs
- Separate comments of different MPs with " | "
- Label and organize different categories of Comments
Update french & spanish translations

- Add "General Comments"
Remove search + system_field in CUSTOM_FIELDS INSERTS
fr_FR.utf8 & es_ES.utf8 works on Windows

- change locales names to unify Windows & Linux