Merge branch 'master' into 'master'

README.md

app/.vscode/settings.json

app/add_tutos.py

app/bdd_for_labels.db

app/createBdd.sql

app/labels

app/labelsTower.py

app/sql_request.py

app/static/add_tuto.css

app/static/ajax.js

app/static/array_opperations.js

app/static/checked.png

app/static/close.png

app/static/create_arbo.js

app/static/father_child.js

app/static/labels.js

app/static/maj_tutorial.js

app/static/unchecked.png

app/static/unclose.png

app/templates/add_new_tuto.html