* [DownloadDialog.java] use *.opus extension instead of *.webm (bad change from 844f80a5f1
)
* [StreamItemAdapter.java] show "opus" in format label instead of "WebM Opus"
* [DownloadDialog.java] use *.opus extension instead of *.webm (bad change from 844f80a5f1
)
* [StreamItemAdapter.java] show "opus" in format label instead of "WebM Opus"