Merge branch 'invoicedetails' into 'devel'
Organisation details in invoice. 1. 'getbillingdetails' function is written for getting organisation details and respected state's gstin. 2. 'bankdetails' column is added in organisation table and respected changes in gkupgrade function. 3. 'getbillingdetails' function also returns 'bankdetails' . 4. "address" field added in 'invoice' table and changes in gkupgrade function for same field. 5. "bankdetails" field added in 'customerandsupplier' table and changes in gkupgrade function for same field. 6. 'paymentmode' column is added in invoice table and respected changes in gkupgrade function. 7. If invoice have address then 'getInvoiceDetails' sends respected address else gives null value. closes #378 See merge request !34