Merge branch 'orm' into 'master'

app/add_tutos.py

app/bdd_for_labels.db

app/labelsTower.py

app/sql_request.py

app/static/js/array_opperations.js

app/static/js/cookies.js

app/static/js/create_arbo.js

app/static/js/father_child.js

app/static/js/labels.js

app/static/js/maj_tutorial.js

app/templates/add_new_tuto.html

app/templates/browse.html

docker/Dockerfile.dev

docker/Dockerfile.prod

docker/requirements.txt