Improvements and bug fixes to Receipt script
Improvements to Inventory manual page
Fix spelling mistake
Take punctuation out of the translated string
Simplifies class row definition.
Fixed variable name in error message
Improve headings
Add "%" next to the input fields for discount_rate and for tax_rate
Added userid field in stockmoves table. It contains the $_SESSION['UserID'] of the user creating the stock movement

Modified StockMovements.php to show the UserID

Modified INSERT INTO stockmoves sentences in files:
ConfirmDispatch_Invoice.php
ContractCosting.php
CounterReturns.php
CounterSales.php
Credit_Invoice.php
GoodsReceived.php
InternalStockRequestFulfill.php
PDFStockCheckComparison.php
RecurringSalesOrdersProcess.php
ReverseGRN.php
SelectCreditItems.php
StockAdjustments.php
StockLocTransferReceive.php
StockTransfers.php
SupplierInvoice.php
WorkOrderIssue.php
WorkOrderReceive.php
Expand and uniform the accuracy of the exchange rate.
Remove unnecessary $db variables
Add the salesman details to the inquiry
Quality assurance system manual pages
Merge branch 'develop' into KwaMoja-Medical