Fix CDN usage
[payment] state changed event.
update payum version.
run code through php-cs-fixer
Add back missing close tag for paginator.
Merge pull request #621 from formapro/payum-update

[payum] update payum version
Merge pull request #532 from formapro/payment-state-changed-event

[payment] payment state changed events.
Merge pull request #630 from kayue/fix/paginator-missing-close-tag

Add back missing close tag for paginator.
Merge pull request #570 from pborreli/fix-cdn-usage

Fix CDN usage
Merge remote-tracking branch 'origin/master'