Merge branch 'master' of github.com:tarantool/tarantool

doc/sphinx/book/box/authentication.rst

doc/sphinx/book/box/box_introspection.rst

doc/sphinx/book/box/box_session.rst

doc/sphinx/book/box/box_space.rst

doc/sphinx/book/box/index.rst

doc/sphinx/book/box/limitations.rst

doc/sphinx/book/box/net_box.rst

doc/sphinx/book/configuration.rst

doc/sphinx/book/connectors/index.rst

doc/sphinx/dev_guide/building_from_source.rst

doc/sphinx/reference/console.rst

doc/sphinx/reference/expirationd.rst

doc/sphinx/reference/log.rst