Add integration test to ensure that catalog numbers are trimmed

[0pdd]

The puzzle 1447-3c055652 from #1447 has to be resolved:

mystamps/src/main/java/ru/mystamps/web/support/spring/mvc/PatchRequest.java

Line 53 in 1e95231

// @todo #1447 Add test to ensure that catalog numbers are trimmed

The puzzle was created by Slava Semushin on 31-Dec-20.