* perf: skip get_pricing_rules if no pricing rule exists
* perf: fetch mode of payments data in single query
* perf: get total company stock only for purchase order
* perf: skip insertion of stock ledger entry
* fix: undo changes to allow negative stock flag
* fix: sider
Co-authored-by: Ankush Menat <ankushmenat@gmail.com>
Co-authored-by: Ankush Menat <ankush@iwebnotes.com>