* tds computation report added
* tds computation logic added
* minor changes to commonify code
* tds payable monthly report added
* initial logic for monthly tds calculation added
* added field for supplier type and pan
* changes related to pan and entity type
* date filter fix and cleanup
* adding cashier closing feature
cashier closing feature has been added as now the cashier can make a
closure to record every thing from his pos as the expenses which has
been paid and the custody which he had at the starting and the amount
which is in his save and the system will record the date and time and
the user and the total net amount automatically which supposed be equal
to all of his sales invoices totals
* add cashier closing link at pos menu
* add cashier closing link to accounts config file
adding cashier closing link at accounts config file to show it at the
accounts module page
* adding more features to cashier closing
adding from time to the cashier closing in case the cashier working more
than one shift also giving him the ability to add the type of payments
to his cashier closure ,
also adding validation to be sure the from time is less than to time.
* Update cashier_closing.py
* Allow Cost Center In Entry of Balance Sheet Account
* Add parent cost center in get payment entry
* Add Tests for Allow Cost Center In Entry of Balance Sheet Account
* Add tests for cost center wise account and party balance
* set parent cost center in taxes
* 1. Remove copy parent cost_center to child
2. Improve update party and account balance functionality on cost_center change
3. Add cost_center filter to get_outstanding_documents
* fix Codacy and Travis issue
* fix for payments field names in sales invoice return
* add verification for payment amount at sales invoice return
adding verification to be sure the payment amount is negative at sales
invoice return
* correction for precision field name
