Clarify how to add subscriptions (#5778)

Author: efb4f5ff-1298-471a-8973-3d47447115dc

static/locales/en-US.yaml

@@ -125,7 +125,7 @@ Subscriptions:
   Latest Subscriptions: Latest Subscriptions
   This profile has a large number of subscriptions. Forcing RSS to avoid rate limiting: This
     profile has a large number of subscriptions.  Forcing RSS to avoid rate limiting
-  'Your Subscription list is currently empty. Start adding subscriptions to see them here.': Your Subscription list is currently empty. Start adding subscriptions to see them here.
+  'Your Subscription list is currently empty. Start adding subscriptions to see them here.': Your Subscription list is currently empty. If you want to import your subscriptions you can go to Data Settings and select Import Subscriptions or you can search for a channel and subscribe to them.
   Disabled Automatic Fetching: You have disabled automatic subscription fetching. Refresh subscriptions to see them here.
   Empty Channels: Your subscribed channels currently does not have any videos.
   'Getting Subscriptions. Please wait.': Getting Subscriptions. Please wait.