Support translations for strings in the dialog

[jayvdb]

The dialog has very basic strings, commonly found in most apps, and translations will mostly already exist in TM for most languages.

[gorille]

Indeed, there should be an option to translate the widget, otherwise this won't be usable in international environments.

[bcomnes]

Agreed we should support this. Unfortunately the only current solution is custom implementations or forking. Hopefully we can revisit this in 2019.

[ghost]

Any updates on this?

[erezrokah]

Fixed via #238