SeriesImportServiceImpl.addSeries(): reduce number of SQL queries

[0pdd]

The puzzle 700-3a29b76a (from #700) in src/main/java/ru/mystamps/web/service/SeriesImportServiceImpl.java (lines 94-96) has to be resolved: "Reduce number of SQL queries by one. Here we're updating series_import_requests twice: when we set series_id field and later when we change status_id. It's possible to do this in one-shot"

The puzzle was created by Slava Semushin on 02-Dec-17.

Tech debt for: 676ad28 (#700)

[0pdd]

@0pdd the only puzzle #756 is solved here.