fix upgrade issue and increment version to 10.0.3

Oqtane.Server/Migrations/Tenant/10000301_FixUrlMappingReferrer.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Oqtane.Databases.Interfaces;
+using Oqtane.Migrations.EntityBuilders;
+using Oqtane.Repository;
+
+namespace Oqtane.Migrations.Tenant
+{
+    [DbContext(typeof(TenantDBContext))]
+    [Migration("Tenant.10.00.03.01")]
+    public class FixUrlMappingReferrer : MultiDatabaseMigration
+    {
+        public FixUrlMappingReferrer(IDatabase database) : base(database)
+        {
+        }
+
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            var urlMappingEntityBuilder = new UrlMappingEntityBuilder(migrationBuilder, ActiveDatabase);
+            urlMappingEntityBuilder.DropColumn("Referrer");
+            urlMappingEntityBuilder.AddStringColumn("Referrer", 2048, true); // must be nullable
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            // not implemented
+        }
+    }
+}