edit invoice/creditnote/expense/otherincome - tidy templates

[shoulders]

• remove payment details
  • this should not be required becasue as soon as a payment is made, you cannot edit the record
• {if $invoice_details.status == 'pending' || $invoice_details.status == 'unpaid'}
  • in the edit template you can only edit if unused or pending - check this and then remove, i added and allo edit function check
• all records shoudl have a checkRecordCanBeSubmitted() function and make the date checks common in general class
• update functions for thesze records should not include finiancials execpt sales_tax_rate, recalcualte totals fixes this
• check that qfrom new_value issue like on expenses does not plague submissions (could be casue by sales_tax_rate and bwing in a different tax system) this is the combobox and is normal
• add submission checking to each
• add placeholder prefill functions, the combo box is still waiting for input, could use later.

[shoulders]

• credit note = present
• expense = present
• otherincome = present