[UI] Refactor TrackFile Modal

frontend/src/TrackFile/TrackFileLanguageConnector.js

@@ -0,0 +1,17 @@
+import { connect } from 'react-redux';
+import { createSelector } from 'reselect';
+import createTrackFileSelector from 'Store/Selectors/createTrackFileSelector';
+import EpisodeLanguage from 'Episode/EpisodeLanguage';
+
+function createMapStateToProps() {
+  return createSelector(
+    createTrackFileSelector(),
+    (trackFile) => {
+      return {
+        language: trackFile ? trackFile.language : undefined
+      };
+    }
+  );
+}
+
+export default connect(createMapStateToProps)(EpisodeLanguage);