fix: demo problems

Description

• Show full list of snapshots
• Filter snapshots by configurable suffix
• Sort snapshots by database state date and creation date
• Update snapshot dynamically
• Fixed bug of empty numClones in REST API response
• Fixed bug where verification token flag was required (verification token can be also set in configuration)
• Config changes:
  • pool should be a parent pool (should not include clones aka subpools), action required (edit)
  • add snapshot filter suffix: snapshotFilterSuffix: "_pre", action required (add)
  • initialSnapshot removed, action required (remove)

Related issues

#16 (closed) #12 (closed)

Checklist

• the MR description has been reviewed
• this MR contains text changes and they have been reviewed OR there are no texts changes
• this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
• this MR contains API changes and they have been reviewed OR there are no API changes