Had billing prompt users with subscribed status

Hiding based on user status and not only billing details allows easier
testing with fake users.

components/app.vue

@@ -239,7 +239,8 @@ function start() {
 			fetchUser().then( u => {
 			  if (u.sub.customerId &&
 			  validStatuses.includes(u.sub.paymentStatus) &&
-			  this.user.status != "Unsubscribed") {
+			  this.user.status != "Unsubscribed" ||
+			  this.user.status != "Subscribed") {
 			    return
 			  }
 			  // Payment must be updated