Change application's version to v1.9.0-RC.2
Change application's version to v1.9.0-RC.2

loic425/Sylius,101medialab/Sylius,diimpp/Sylius,antonioperic/Sylius,lchrusciel/Sylius,diimpp/Sylius,loic425/Sylius,Zales0123/Sylius,lchrusciel/Sylius,101medialab/Sylius,SyliusBot/Sylius,diimpp/Sylius,GSadee/Sylius,101medialab/Sylius,Zales0123/Sylius,Sylius/Sylius,antonioperic/Sylius,Arminek/Sylius,Zales0123/Sylius,GSadee/Sylius,SyliusBot/Sylius,Arminek/Sylius,pamil/Sylius,lchrusciel/Sylius,Sylius/Sylius,Sylius/Sylius,GSadee/Sylius,pamil/Sylius,pamil/Sylius,SyliusBot/Sylius,loic425/Sylius,antonioperic/Sylius,Arminek/Sylius