* Add link to flink-clickhouse-sink + fixes nearby
* Add link to dbal-doctrine
* cleanup ru toc root
* Sort out russian docs ToC a little bit
* Add link collection of commercial support services
* Additional .gitignore entries
* Merge a bunch of small articles about system tables into single one
* Merge a bunch of small articles about formats into single one
* Adapt table with formats to English docs too
* Add SPb meetup link to main page
* Move Utilities out of top level of docs (the location is probably not yet final) + translate couple articles
* Merge MacOS.md into build_osx.md
* Move Data types higher in ToC
* Publish changelog on website alongside documentation
* Few fixes for en/table_engines/file.md
* Use smaller header sizes in changelogs
* Group up table engines inside ToC
* Move table engines out of top level too
* Specificy in ToC that query language is SQL based. Thats a bit excessive, but catches eye.
* Move stuff that is part of query language into respective folder
* Move table functions lower in ToC
* Lost redirects.txt update
* Do not rely on comments in yaml + fix few ru titles
* Extract major parts of queries.md into separate articles
* queries.md has been supposed to be removed
* Fix weird translation
* Fix a bunch of links
* There is only table of contents left
* "Query language" is actually part of SQL abbreviation
* Change filename in README.md too
* fix mistype
* s/formats\/interfaces/interfaces\/formats/g
* Remove extra clarification from header as it was too verbose, probably making it a bit more confusing
* Empty article was supposed to be hidden
* At least change incorrect title
* Move special links to the bottom of nav and slightly highlight them
* Skip hidden pages in bottom navigation too
* Make front page of documentation to be part of Introduction
* Make tables in introduction somewhat readable + move abbreviation definitions earlier
* Some introduction text refactoring
* Some docs introduction refactoring
* Use admonitions instead of divs
* Additional .gitignore
* Treat .gif as images too
* Clarify ToC item
