Non localized messages

[thiagoeec]

Expectation: Localized message for this messages:
Fix any of the following / Fix all of the following

Actual: English messages only.

Motivation: All messages to the user should be localized.

axe-core version: 3.3.1

Using Axe bundled with Ace by Daisy (v 1.1.1).

For Tooling issues:
- Node version: 11.4.0 
- Platform:  Windows 10 x64 1903

[WilcoFiers]

We'll take a look. Localisations are maintained partially outside the axe-core main team, so it's not something we guarantee is always up to date.

[WilcoFiers]

Alright, so my initial assumption was wrong about this. The problem isn't that we don't have localisations of these strings, it's that we're not using them. The reason is that failureMessage is ignored in Audit.prototype.applyLocale:
https://github.com/dequelabs/axe-core/blob/develop/lib/core/base/audit.js#L216

That definitely needs to be fixed.

[jeankaplansky]

@WilcoFiers, @straker : Should this be a release notes item for axe-core 3.4?

Wilco says yes: 9/29/2019, consider it a "fix"

Entry added 10/14/2019

[padmavemulapati]

Dev task