* add single, cumulative threshold, remove checkboxes
* remove tds child table from supplier & add tds link field
* add description field in tax withholding category
* add tax withholding data for indian setup, some fixes
* add a checkbox for tax withholding in purchase invoice
* remove supplier's child table for tds
* enable tds field if supplier has tds set inits master
* move rates data to child table - adding fiscal year support
* change bootstrap data according to child table config of tds
* show category name in list view
* loyalty program fixes
* moved tax calculation to tax_withholding.py
- calculation for tds amount for cumulative threshold from gl entry
* add fiscal year dependency in company test
* minor loyalty program fix
* minor tier calculation fix
* minor handling duplicate exception
* toggle apply_tds according to supplier, code rectify
* minor fixes for loyalty program
* test case for single and cumulative threshold
* codacy fix