appeals: raise appeal limits.

The old limit was one appeal per day. The new limit is based on your
upload limit. Each appeal costs 3 upload slots. If you have 15 upload
slots, then you can appeal up to 5 posts at once, but you won't be able
to appeal or upload more until your appeals are approved or rejected. If
you have unlimited uploads, then you have unlimited appeals.

app/logical/upload_limit.rb

@@ -3,6 +3,7 @@ class UploadLimit
 
   INITIAL_POINTS = 1000
   MAXIMUM_POINTS = 10_000
+  APPEAL_COST = 3
 
   attr_reader :user
 
@@ -31,10 +32,15 @@ class UploadLimit
   end
 
   def used_upload_slots
-    pending = user.posts.pending
-    early_deleted = user.posts.deleted.where("created_at >= ?", 3.days.ago)
+    pending_count = user.posts.pending.count
+    appealed_count = user.post_appeals.pending.count
+    early_deleted_count = user.posts.deleted.where("created_at >= ?", 3.days.ago).count
 
-    pending.or(early_deleted).count
+    pending_count + early_deleted_count + (appealed_count * APPEAL_COST)
+  end
+
+  def free_upload_slots
+    upload_slots - used_upload_slots
   end
 
   def upload_slots
@@ -111,6 +117,4 @@ class UploadLimit
       points_for_next_level(n - 1)
     end.sum
   end
-
-  memoize :used_upload_slots
 end