Feature: Add catalan (Catalonia) language (#672)

Co-authored-by: Pranav Raj S <pranavrajs@gmail.com>

app/javascript/dashboard/i18n/index.js

@@ -1,9 +1,11 @@
+import ca from './ca';
 import en from './en';
 import de from './de';
 import ml from './ml';
 
 export default {
+  ca,
   de,
   en,
-  ml
+  ml,
 };