[VariationBundle] Fix unexpected dependency issue
adjustments on .gitignore
User email as username for OAuth login.
[CoreBundle] Add ability to information how many products were sold
[OrderBundle] Remove unused config parameter
Add "email" to Facebook OAuth scope.
Merge pull request #1890 from stloyd/patch-2

[OrderBundle] Remove unused config parameter
Merge pull request #1887 from stloyd/feature/sold_variants

[CoreBundle] Add ability to information how many products were sold
Merge pull request #1807 from stloyd/bugfix/variation_validator

[VariationBundle] Fix unexpected dependency issue
[Promotion] Make sure that coupons are always unique
[CoreBundle] Fix typo in `state-machine.yml` file
Merge pull request #1896 from stloyd/bugfix/core_sm

[CoreBundle] Fix typo in `state-machine.yml` file
Merge pull request #1895 from stloyd/bugfix/coupon_unique

[Promotion] Make sure that coupons are always unique
Merge pull request #1889 from kayue/patch-1

User email as username for OAuth login.
Merge pull request #1876 from cordoval/could-we-ignore-cache-entirely

adjustments on .gitignore
[Promotion] Add basic gift card code
[Promotion] Add missing const & extend fixtures
Fix promotion related specs
Add PoC for gift card validation to prevent cheats
Add frontend page where user can see all used giftcards ever