Merge pull request #720 from umpirsky/feature/fix-inventory-unit

Fixed inventory UI
Fixed SyliusCheckoutEvents
When no data is sent use default values for sorting labels
Merge pull request #727 from stloyd/bugfix/sorting_links

[ResourceBundle] When no data is sent use default values for sorting labels
Merge pull request #729 from umpirsky/fix/checkout-event-names

Fixed SyliusCheckoutEvents
Removed check for empty values
Change the way how Doctrine fixtures bundle is initialized & polish README file
Polish Behat DataContext file to improve performance
Use interface instead of entity in doctrine mappings
Moved backorders enabled to parameters.yml
Merge pull request #736 from stloyd/bugfix/issue-719

[CoreBunde] Use interface instead of entity in doctrine mappings
Update messages.ru.xlf

Add some missed translations for Russian language
Merge pull request #740 from falinsky/patch-1

Update messages.ru.xlf
[Frontend] Label class for out of stock message corrected
Merge pull request #746 from wahler/issue-737

[Frontend] Label class for out of stock message corrected
[Core] Consider Shipment State "ready" in StateResolver
Merge pull request #747 from wahler/issue-735

[Core] Consider Shipment State "ready" in StateResolver
Add support for n-number of database factories to easily be configured and used. This is important for being able to support custom ORM's
[payum] upgrade payum to 0.7. make it work
[payum] process sensitive values safely.