[Epic] Restructure docs, stage 3

[patiencedaur]

Total: 20 sp

Plan: https://www.notion.so/tarantool/Tarantool-CE-c075d0db9ce24893beca704c145ae501#73937305a57442579723413d85dde0be

Details

• Create the new Developer's guide section #3179
• Move pages from Reference #3180
• Clean up the Administration section #3177
• Integrate tarantool.io/en/dev/core & internals #2635
• Link to connector docs/how-tos from the Downloads page #3178
• Sort information about connectors #2667
• Put the chapter together as described below
• Fix all broken links
• Add redirects (instruction)

Desired structure of the Developer's Guide

Menu item order is TBD.

• Tarantool Lua syntax
• CRUD operations
• Triggers
• Internals (provide external link to tarantool.io/en/dev/core)
• Developing with Cartridge (temporarily link to Cluster on Cartridge)
• Links (one page, below are the contents)
  • Awesome Tarantool
  • Tutorials
  • Best practices
  • Reference

[andreyaksenov]

Docs are restructured: #3817. Future tasks:

• The Developing applications section is going to be reworked: Update the 'Developing applications' section to using a new approach to develop apps #3920.
• The Administration section: [Epic] Update the 'Administration' section #4154