Merge branch 'feat/updating' into 'master'

.gitignore

docs/authorization.md

docs/data_management.md

docs/data_search.md

docs/dataset.md

docs/img/anis_admin_root.png

docs/img/authentication_enabled.png

docs/img/create_instance.png

docs/img/criteria.png

docs/img/dataset_search.png

docs/img/default_instance.png

docs/img/default_search.png

docs/img/delete_instance.png

docs/img/detail_page.png

docs/img/handle_databases.png

docs/img/handle_databases_configuration.png

docs/img/hover_result.png

docs/img/import_instance.png

docs/img/important_settings.png

docs/img/instance_creation_form.png