Add Translation of Text

We should probably use StringTranslationTrait for this so we can use $this->t() instead of the global function.

@opdavies, good catch. Drupal\Core\Plugin\PluginBase already has the trait so we can use it.

I know you're not supposed to pass variables through t(), but this quick and dirty approach has worked for years in patch #2.

Linking to the core issue (#2546212) that if it ever gets committed, is the "correct" way to make configuration items translatable.

@opdavies, how can I help get this committed to 2.0.x? It's a blocker for me to upgrade.

Done, and tagged as v2.0.2.

Automatically closed - issue fixed for 2 weeks with no activity.