* Added documentation about ClickHouse testing (draft) [#CLICKHOUSE-2]
* Updated documentation about ClickHouse testing [#CLICKHOUSE-2]
* Moved information about ClickHouse tests to correct place [#CLICKHOUSE-3]
* Moved information about ClickHouse tests to correct place [#CLICKHOUSE-3]
* 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
* Remove Berlin meetup link
* Do not block browser while single page docs content loads
* Restore sidebar scroll tracking feature
* Temporary hide footer in single page docs mode so it does not jump around
* Swap sidebars in single page docs mode
* fix lost anchor in link
* Explicitly fail if there are errors during docs build
