Portuguese Brazil translation for openeducat_core module

[fnegrini]

Added Portuguese Brazil translation for openeducat_core module

[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[coveralls]

Coverage remained the same at 67.073% when pulling 5c412b0 on fnegrini:10.0 into 7acb229 on openeducat:10.0.

[fnegrini]

Some therms have been changed. New translation file will be done shortly