[AddressBundle] Don't validate province if no country was set
Don't make ajax request for provinces if contry value is empty
Cover the case when we don't revert changes

Instead of using undefined variable.
Plus, rename the url variable to a more explicit name.
Merge pull request #2076 from stloyd/bugfix/province_validator

[AddressBundle] Don't validate province if no country was set
[BUG FIX - API] Add missing api province route.
Merge pull request #2094 from Joypricecorp/api-address-missing-config

[BUG FIX - API] Add missing api province route.
Merge pull request #2087 from winzou/history

Cover the case when we don't revert changes
Merge pull request #2080 from crevillo/province-choise

Don't make ajax request for provinces if contry value is empty
Skip volume price if was saved as empty, fix volume pricing form
Display 'volume_based' prices on product details
Merge pull request #2097 from stloyd/bugfix/volume_pricing

Skip volume price if was saved as empty, fix volume pricing form
Fixes bug in shipping bundle

Wrong default configuration. This PR fixes it :)
Merge pull request #2102 from steffenbrem/fix-shipping-bundle-configuration

[Bug] Fixes small bug in shipping bundle
[payum] make compatible with payum 0.12
Merge pull request #2027 from formapro-forks/payum-012-upgrade

[Payum] Upgrade up to 0.12
Refactor code to properly work with domain managers not repositories while creating resources
Extract interface from DomainManager class.
Fix some service declarations.
Fix more code to match manager & repository split
Implement transactions in DomainManager, remove useless code & cleanup