refactor(RawParsedDataDto): rename releaseYear to issueDate as it can contain a date.

Part of #1287

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/importing/RawParsedDataDto.java

@@ -26,7 +26,7 @@ public class RawParsedDataDto {
 	private final String categoryName;
 	private final String countryName;
 	private final String imageUrl;
-	private final String releaseYear;
+	private final String issueDate;
 	private final String quantity;
 	private final String perforated;
 	private final String michelNumbers;

src/main/java/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImpl.java

@@ -101,7 +101,7 @@ public class SeriesInfoExtractorServiceImpl implements SeriesInfoExtractorServic
 	public SeriesExtractedInfo extract(String pageUrl, RawParsedDataDto data) {
 		List<Integer> categoryIds = extractCategory(data.getCategoryName());
 		List<Integer> countryIds = extractCountry(data.getCountryName());
-		Integer releaseYear = extractReleaseYear(data.getReleaseYear());
+		Integer releaseYear = extractReleaseYear(data.getIssueDate());
 		Integer quantity = extractQuantity(data.getQuantity());
 		Boolean perforated = extractPerforated(data.getPerforated());
 		Set<String> michelNumbers = extractMichelNumbers(data.getMichelNumbers());