en to tet translation catalogue (2 entries)

en: Only used if gradient is selected
tet: Uza deit se gradiente mak hili

en: Picture displayed in Twitter/Facebook cards when the link is posted to social networks. To be tested via https://cards-dev.twitter.com/validator and https://developers.facebook.com/tools/debug/
tet: Fóto ne’ebé sei haree iha karta Twitter/Facebook bainhira link tau iha redes sosial. Bele halo teste liu hosi https://cards-dev.twitter.com/validator no https://developers.facebook.com/tools/debug/"
