[andrefelipeufcg]

Summary

• Add the Brazilian Portuguese translation catalog for the advancedforms plugin.
• Include reservation, validation, table, notification, pre-reservation, and calendar availability messages.
• Pass the translated reservation placeholder from Twig to JavaScript while preserving the internationalized fallback.

Files changed

• locales/pt_BR.po / locales/pt_BR.mo - new translation catalog
• templates/reservation_question.html.twig - pass translated placeholder via data attribute
• public/js/modules/ReservationQuestionWidget.js - use the data attribute placeholder with i18n fallback

Validation

• PHP syntax checks pass for all modified PHP files.
• The pt_BR.mo catalog was compiled from pt_BR.po.

Closes #59

[andrefelipeufcg]

Superseded by #71 (pt_BR translation only), opened from a dedicated branch.