In EZP-25428 and EZP-26430 we added symfony extractors to gathers strings from handlebars templates and javascript files.

Path to those files have been hardcoded here (example for handlebar): https://github.com/ezsystems/PlatformUIBundle/blob/master/Resources/config/services.yml#L254

A way that is more extensible should be provided.

Main use case: a developer should be able to tell in which bundle and which folder to look for the javascript or handlebar files.