en to pt_BR translation catalogue (3 entries)

[ctx: Keystroke description for assistive technologies: keystroke for copying selected content.]
en: Copy selected content
pt_BR: Copiar conteúdo selecionado

[ctx: Keystroke description for assistive technologies: keystroke for pasting content.]
en: Paste content
pt_BR: Colar conteúdo

[ctx: Keystroke description for assistive technologies: keystroke for pasting content as plain text.]
en: Paste content as plain text
pt_BR: Colar conteúdo como texto simples
