On hold inventory status fixes
Merge pull request #952 from umpirsky/fix/on-hold-inventory

Fix/on hold inventory
Change properties' visibility to protected.
Merge pull request #962 from kayue/patch-4

Change PurchaseListener properties' visibility to protected.
Configurable purchace redirect route
Fix NoopInventoryOperator after Interface was updated. Also adding spec to prevent this from repeating.
Merge pull request #967 from Richtermeister/fix-noop-inventory

Fix NoopInventoryOperator after Interface was updated. Also adding spec ...
Separate purchace listener flash
Moved PurchaseCompleteEvent to core
Fixed unique order number error
Merge pull request #953 from umpirsky/fix/separate-purchace-listener-flash

Separate purchace listener flash
Merge pull request #963 from umpirsky/feature/configurable-purchace-redirect-route

Configurable purchace redirect route
Merge pull request #904 from umpirsky/fix/last-order-number

Fixed unique order number error
Add check for security context so that layout is usable in 404 error.
Add 404 page which extends Sylius layout
Merge pull request #974 from Richtermeister/fix-404-user

Add checks for security context so that layout is usable for 404 error page.
Initial routing for the api
Refactoring of the resource bundle controller
Introduce domain manager and restore the ability to cancel action
Remove backup file