uploads: replace old upload limits with new upload limits.

app/logical/danbooru_math.rb

@@ -1,11 +0,0 @@
-class DanbooruMath
-  def self.ci_lower_bound(pos, n, confidence = 0.95)
-    if n == 0
-      return 0
-    end
-
-    z = Statistics2.pnormaldist(1 - (1 - confidence) / 2)
-    phat = 1.0 * pos / n
-    100 * (phat + z * z / (2 * n) - z * Math.sqrt((phat * (1 - phat) + z * z / (4 * n)) / n)) / (1 + z * z / n)
-  end
-end

app/logical/upload_limit.rb

@@ -11,7 +11,23 @@ class UploadLimit
   end
 
   def limited?
-    used_upload_slots >= upload_slots
+    if user.can_upload_free?
+      false
+    elsif user.created_at > 1.week.ago
+      true
+    else
+      used_upload_slots >= upload_slots
+    end
+  end
+
+  def limit_reason
+    if user.created_at > 1.week.ago
+      "cannot upload during your first week of registration"
+    elsif limited?
+      "have reached your upload limit"
+    else
+      nil
+    end
   end
 
   def used_upload_slots