Fixed: fixed an issue where season ignore check wasn't working correctly.

Fixed: unavailable nzbdrone service will no longer block series from being added.

NzbDrone.Core/Datastore/Migrations/Migration20120227.cs

@@ -0,0 +1,19 @@
+using Migrator.Framework;
+
+namespace NzbDrone.Core.Datastore.Migrations
+{
+
+    [Migration(20120227)]
+    public class Migration20120227 : NzbDroneMigration
+    {
+        protected override void MainDbUpgrade()
+        {
+            Database.ExecuteNonQuery(@"DELETE FROM Seasons WHERE SeasonNumber NOT IN
+                                            (
+                                                SELECT DISTINCT SeasonNumber
+                                                FROM Episodes
+                                                WHERE Seasons.SeriesId = Episodes.SeriesId
+                                            )");
+        }
+    }
+}