Initialize a new database with the default tables for chill.
    Creates the following tables:
    Chill
    Node
    Node_Node
    Route
    Query
    Template

def init_db():
    """Initialize a new database with the default tables for chill.
    Creates the following tables:
    Chill
    Node
    Node_Node
    Route
    Query
    Template
    """
    with current_app.app_context():
        for filename in CHILL_CREATE_TABLE_FILES:
            db.execute(text(fetch_query_string(filename)))