Merge branch 'master' into 'change_GraphQL'

.env_dist

.gitlab-ci.yml

README.md

ldap_config.json

ldap_credentials_dist.json

notes/CONTRIBUTING.md

notes/LDAPGroup.png

notes/LDAPUseCase.PNG

notes/LDAPUser.png

notes/LDAP_API.png

notes/auth.png

notes/grapheDroits.jpg

notes/hist_ldap.md

notes/struct.png

package-lock.json

package.json

sigma-backend.service

src/adminview/admin_router.ts

src/app.ts

src/config_passport.js