Language for survey buttons

[rubenzunguze]

Hi. I am pleased with the functionalities of shiny surveys. I am using it for our procurement, finance and field level activities. I was also happy because it integrates with the shinyvalidate package. Just wanted to ask you to add an option to change the text in "Next", "Previous" and "Submit" buttons of the Survey. This will help us work in other languages (e.g. Portuguese). I would like to have them as "Próximo", "Anterior", "Submeter".