Added support for translate() fallback to default locale key/value

[motumas]

Added support for translate() fallback to default locale key/value if requested locale file don't have the requested key/value.

[gjuchault]

Well, if you use a german locale, maybe getting an english value when the key is not found is not what users want.

[torvalde]

The alternative is just to see the key (that probably also is in english) if the translation is missing for that country... If you use variables in your translations this can get messy. By enabling the fallback to the default country it would be possible to deploy some translations before all the translations are complete, this is useful for large projects.

[gjuchault]

Okay this makes some sense

Please commit to :

• Fix indentation
• Push version
• Add a note on the changelog
• Add an option (different from devMode that is mostly for debugging) fallbackToDefault defaulting to false
• Add some doc on that option

[sceee]

@torvalde @gjuchault is this still active? I am looking exactly for this.

[gjuchault]

@sceee I'm not an active maintainer this days, and I can't merge a branch with conflicts / not ready. You're free to create another clean pull-request with the same changes if you want.