Merge pull request #1122 from camptocamp/fix-master

Fix master
Update database diagram
Update the SQL Alchemy model
Add new model in forms
Add Alembic migration script
Remove sqlalchemy_migrate migration configuration
Update the documentation and the changelog for Alembic
Remove manage_db and use alembic in the c2ctool
Remove no more needed create_db script
Update the entry for the new model
Use function to build views
Fix alembic test
fix-alembic-tests
fix-view-tests
fix-view
update-view
fix-interface