def add_sheet(self, worksheet, index = None):
        if index is None:
            index = len(self.worksheets)
        self.worksheets.insert(index, worksheet)
Loads all toggles into a dictionary for use in JS
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/tablib-0.10.0/tablib/packages/openpyxl/workbook.py/Workbook.add_sheet--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/corehq/toggles.py/toggle_values_by_name