Clean up the Administration section

Epic: Restructure Tarantool docs, stage 3

Root document: https://www.tarantool.io/en/doc/latest/book/admin/

Details

• Clean up the Admin section as proposed below
• Move the translations along with everything else
• Add a link to the Tooling section in a relevant place
• Create redirects (instruction)

Proposal for Admin section structure

This tree is TBD.

• Installation and upgrade
  • Manage modules
  • Upgrades
  • Notes on operating systems
• Configuration
  • Instance configuration
  • Security (rename, the name does not reflect article content)
  • Access control
  • Sharding with vshard
• Monitoring
  • Logging
  • Server introspection
  • Daemon supervision
  • Monitoring with metrics (connect the /metrics module here)
  • Monitoring a replica set (move this from the "Replication administration" section)
• Troubleshooting
  • Troubleshooting guide
  • Disaster recovery
  • Reseeding a replica (move this from the "Replication administration" section and discard the section)
  • Recovering from a degraded state (move this from the "Replication administration" section and discard the section)
  • Resolving replivation conflicts (move this from the "Replication administration" section and discard the section)
  • Bug reports

Start with the Administration root document and review the proposed structure in this issue, including the related stage 3 epic. Reorganize the Admin section, move its translations, add a relevant Tooling link, and create redirects; completion means all listed checklist items are addressed.