Series import: add integration test to check that URL can be parsed

[0pdd]

The puzzle 690-f7dcd2e7 from #690 has to be resolved:

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

Line 31 in 16c3c75

// @todo #690 Series import: add integration test to check that URL can be parsed

The puzzle was created by Slava Semushin on 14-Jul-19.

[php-coder]

This issue is similar to #1079 but on another page.