Patches issue where shipment key was not being serialized with an order after lineitem repository refactoring.
Adds PoNumber to invoice missed in serialization for Examine
Adds US date format
Build 1.5.1.5
More comments on the reports controller
Merge pull request #999 from rustyswayne/1.5.2

Minor serialization patches for Examine and adds a US date format setting.
Fixes settings date format not visible right after install
Merge pull request #1003 from rustyswayne/1.5.2

Fixes settings date format not visible right after install
Fixed M-537 - adding new shipmethod fails
Updates attribute path value for FixedRateShippingProvider to add a shipping method
Test build for 1.5.2 release
Merge pull request #1005 from rustyswayne/1.5.2

#M-537 Fixed
1.5.2 release build
Merge branch '1.5.2'