Versatile StorageJoin

* Update of english version of descriprion of the table function `file`.

* New syntax for ReplacingMergeTree.
Some improvements in text.

* Significantly change article about SummingMergeTree.
Article is restructured, text is changed in many places of the document. New syntax for table creation is described.

* Descriptions of AggregateFunction and AggregatingMergeTree are updated. Russian version.

* New syntax for new syntax of CREATE TABLE

* Added english docs on Aggregating, Replacing and SummingMergeTree.

* CollapsingMergeTree docs. English version.

* 1. Update of CollapsingMergeTree. 2. Minor changes in markup

* Update aggregatefunction.md

* Update aggregatefunction.md

* Update aggregatefunction.md

* Update aggregatingmergetree.md

* GraphiteMergeTree docs update.
New syntax for creation of Replicated* tables.
Minor changes in *MergeTree tables creation syntax.

* Markup fix

* Markup and language fixes

* Clarification in the CollapsingMergeTree article

* DOCAPI-4821. Sync between ru and en versions of docs.

* Fixed the ambiguity in geo functions description.

* Example of JOIN in ru docs

* Deleted misinforming example.

* Fixed links to IN operators.

* [EN] Updated the description of the synonyms syntax.

* Update the description of aliases syntax.

* Clarification of the aliases description.

* Typo fix.

* Update syntax.md

InDepthNodeVisitor for AST traversal 

Add getrandom from musl

Guard `force_restore_data_flag_file` removal

Low cardinality join

* Update of english version of descriprion of the table function `file`.

* New syntax for ReplacingMergeTree.
Some improvements in text.

* Significantly change article about SummingMergeTree.
Article is restructured, text is changed in many places of the document. New syntax for table creation is described.

* Descriptions of AggregateFunction and AggregatingMergeTree are updated. Russian version.

* New syntax for new syntax of CREATE TABLE

* Added english docs on Aggregating, Replacing and SummingMergeTree.

* CollapsingMergeTree docs. English version.

* 1. Update of CollapsingMergeTree. 2. Minor changes in markup

* Update aggregatefunction.md

* Update aggregatefunction.md

* Update aggregatefunction.md

* Update aggregatingmergetree.md

* GraphiteMergeTree docs update.
New syntax for creation of Replicated* tables.
Minor changes in *MergeTree tables creation syntax.

* Markup fix

* Markup and language fixes

* Clarification in the CollapsingMergeTree article

* DOCAPI-4821. Sync between ru and en versions of docs.

* Fixed the ambiguity in geo functions description.

* Example of JOIN in ru docs

* Deleted misinforming example.

* Fixed links to IN operators.

* Updated the description of ALTER MODIFY.

* [RU] Updated ALTER MODIFY description.

LowCardinality support for old clients, part 2

Docker fixes (related to #3695)

Fix copy-paste error.

Skip size check for LowCardinality column file.

CLICKHOUSE-3578 apply column defaults for semistructured input formats

clang-format of dbms/src/Dictionaries/*

Support SUBSTRING(expr FROM start FOR length)