Merge pull request #47 from inspiran/refactor

Adjusted pricing set to implement ArrayAccess interface for convenience
remove partner so owner is used consistently & CS
Merge pull request #48 from WriteOrRead/refactor

remove partner so owner is used consistently & CS
Added OwnerNotes for Cart & Order, InternalNotes for Order
Merge branch 'refactor' of https://github.com/inspiran/VespolinaCore into refactor