@import url(en/app.properties)

[pl]
@import url(pl/app.properties)

[cs]
@import url(cs/app.properties)

[de]
@import url(de/app.properties)

[ja]
@import url(ja/app.properties)

[pt_BR]
@import url(pt_BR/app.properties)

[es]
@import url(es/app.properties)