Add missing paypal express checkout in config.
Merge branch 'master' of https://github.com/Joypricecorp/Sylius
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/Joypricecorp/Sylius
Fix & polish code of SearchBundle
Replace `doctrine-bundle` with stable version & adjust some other deps
Merge remote-tracking branch 'upstream/master'
fix-2163 and others
Merge pull request #2182 from Joypricecorp/fix/order-payment

Fix 2163 and others
Merge pull request #2181 from stloyd/bugfix/composer

Replace `doctrine-bundle` with stable version & adjust some other deps
Merge pull request #2170 from stloyd/bugfix/search

Fix & polish code of SearchBundle
Fix a fatal error in some PHP versions.
Merge pull request #2184 from jakzal/bugfix/orm-indexer-fatal-error

Fix a fatal error in some PHP versions.