Changed default data migration version number to 1

--HG--
branch : dev

src/Orchard.Web/Modules/Orchard.Themes/DataMigrations/ThemesDataMigration.cs

@@ -22,7 +22,7 @@ namespace Orchard.Themes.DataMigrations {
                 .Column<string>("CurrentThemeName")
                 );
 
-            return 0010;
+            return 1;
         }
     }
 }