Implement translations for Vietnamese (#1807)
Implement translations for Vietnamese (#1807)

* init vietnamses translation

* Complete translation for Vietnamese

quasarframework/quasar,pdanpdan/quasar,fsgiudice/quasar,pdanpdan/quasar,rstoenescu/quasar-framework,pdanpdan/quasar,fsgiudice/quasar,quasarframework/quasar,pdanpdan/quasar,fsgiudice/quasar,quasarframework/quasar,rstoenescu/quasar-framework,quasarframework/quasar,rstoenescu/quasar-framework