updated php integration package to 2.2.4
Merge branch 'INTG-767' into develop
wpSveaConfigProd, wpSveaConfigTest getEndpoint() updated to handle ADMIN_TYPE type.
Merge branch 'INTG-766' into develop
fix for invoice payments in wp-e-commerce versions >3.8.12
Merge branch 'INTG-768' into develop