[codbex-athena] Fix issues

[NicoleNG18]

• update data sample
• change number generator numbers in codbex-payments
• refactor credit and debit notes
• refactor templates

[NicoleNG18]

fixed with:

• Fix credit and debit note generating codbex-invoices#70
• fix sales invoice template codbex-templates#8
• Update sample data codbex-athena-data-sample#4
• change number generator numbers codbex-payments#44