Merge remote-tracking branch 'origin/master' into 1.6

doc/sphinx/_static/sphinx_design.css

doc/sphinx/book/administration.rst

doc/sphinx/book/app/d_plugins.rst

doc/sphinx/book/box/atomic.rst

doc/sphinx/book/box/authentication.rst

doc/sphinx/book/box/box_index.rst

doc/sphinx/book/box/box_schema.rst

doc/sphinx/book/box/box_space.rst

doc/sphinx/book/box/index.rst

doc/sphinx/book/box/sophia_diff.rst

doc/sphinx/book/configuration/index.rst

doc/sphinx/book/connectors/__c.rst

doc/sphinx/book/connectors/index.rst

doc/sphinx/dev_guide/building_from_source.rst

doc/sphinx/getting_started.rst

doc/sphinx/reference/pickle.rst

doc/sphinx/reference/socket.rst

doc/www/content/newsite/careers.yml

doc/www/theme/static/design.css

doc/www/theme/static/design/logo_qiwi.png