LDEV-4746 Use table as question ID generator for QbQuestionIn the future we can add new columns to lams_sequence_generator, so wehave a single table for generating new IDs instead table-per-ID.
LDEV-4745 Make service methods do what they claim to doGetting max question ID and version returned already incremented versioninstead of actual max. Now they return real max value and need to bemanually incremented afterwards.