[Order] Introduce OrderAwareInterface
Add ability to delete collection items from backend form
Add remove-orphan to allow attribute deletion
Add translation string
Remove unused collection-remove-btn class
Fix Be2bill multiple payment
Move migrations queries out of post*
Use transition on Order creation
Use state machine callback for order number

Instead of having a full listener
Replace order.pre_create event with finite callbacks
Replace payment pre_state_change event
Fixes
Replace order.pre_release
Use own fork of Finite

As a temporary solution to move forward
Tune state machine configuration
Merge pull request #1509 from winzou/fix/migrations

Move migrations queries out of post*
Merge pull request #1508 from winzou/fix/be2bill

Fix Be2bill multiple payment
Merge pull request #1493 from lbaey/master

Add ability to remove attributes from product
Merge pull request #1507 from stloyd/feature/order_aware_interface

[Order] Introduce OrderAwareInterface
Merge pull request #1447 from winzou/state-machine

[State machine] Improve things drastically