Finished task
1. User can add stock location in config page. Adding format is StockA,StockB,StockC for example
2. Item page, there is no more quantity column show in cert table. The quantity tracking is integrated in inventory detail
3. Receiving page, There is a stock location for user to select before receiving or returning stuff
4. Sale page, There is a stock location which is for user to select a stock location they sell from
Remain task
1. Requisition work flow
2. Language editing
3. Remove unuse code
PS
database.sql script merged with current ospos one
remaining problems in reporting (sale_type to add in sales_temp query?)
data model should be refactored to allow more genericity for custom item locations (2+)
inventory tracking should be adapted to use multiple locations (instead of duplicating items for different locations)
