/series/{id}: fix determination of presence series in collection.

Correction for 27d1204 commit.

After feedback from: Pavel Finkelshtein <pavel.finkelshtein@gmail.com>

Author: php-coder

src/main/java/ru/mystamps/web/entity/Series.java

@@ -47,7 +47,7 @@
 @Getter
 @Setter
 @ToString(exclude = "metaInfo")
-@EqualsAndHashCode(exclude = "metaInfo")
+@EqualsAndHashCode(exclude = { "metaInfo", "images" })
 @SuppressWarnings("PMD.TooManyFields")
 public class Series {