Merge branch 'master' into 'resolver_dev'

.dockerignore

.eslintignore

.gitignore

.gitlab-ci.yml

CONTRIBUTING.md

Dockerfile

README.md

db/knex_router.js

db/migrations/20180225001319_create_groups.js

db/migrations/20180301152556_group_parent_key.js

db/migrations/20180302130024_create_messages.js

db/migrations/20180302152113_requests.js

...ations/20180302184519_rename_recipient_user_join_group.js

db/migrations/20180303192411_create_metaGroups.js

db/migrations/20180307213043_fixes_and_messages.js

db/migrations/20180316003119_create_posts.js

db/migrations/20180415160405_message_types.js

db/migrations/20180530165342_spelling_corrections.js

db/migrations/20180831165621_question_for_answer.js

db/seeds/01_create_groups.js