Added tests for editing and deleting medias
Added tests for editing and deleting medias

cbastienbaron/sandbox,cbastienbaron/sandbox,cbastienbaron/sandbox,OskarStark/sandbox,4devs/sonata-sandbox,KonstantinBY/sonata-sandbox,gabrielalmeida/sonata-sandbox,Soullivaneuh/sonata-sandbox,JoshuaEstes/sonata-skeleton,OskarStark/sandbox,tophsic/sandbox,zsamotsil/polcode_task,davask/exim-cms,davask/exim-cms,zsamotsil/polcode_task,sonata-project/sandbox,tworzenieweb/polcode-recruitment,vihuvac/sandbox,OskarStark/sandbox,nlzet/sandbox,JoshuaEstes/sonata-skeleton,nlzet/sandbox,KonstantinBY/sonata-sandbox,volodymyr-nakvasiuk/sandbox,Soullivaneuh/sonata-sandbox,rzproject/sandbox,volodymyr-nakvasiuk/sandbox,4devs/sonata-sandbox,tworzenieweb/polcode-recruitment,davask/exim-cms,JoshuaEstes/sonata-skeleton,sonata-project/sandbox,4devs/sonata-sandbox,gabrielalmeida/sonata-sandbox,sonata-project/sandbox,KonstantinBY/sonata-sandbox,vihuvac/sandbox,KonstantinBY/sonata-sandbox,vihuvac/sandbox,rzproject/sandbox,volodymyr-nakvasiuk/sandbox,davask/exim-cms,gabrielalmeida/sonata-sandbox,morilog/sandbox,vihuvac/sandbox,morilog/sandbox,morilog/sandbox,4devs/sonata-sandbox,nlzet/sandbox,cbastienbaron/sandbox,volodymyr-nakvasiuk/sandbox,tophsic/sandbox,rzproject/sandbox,tophsic/sandbox,tophsic/sandbox,Soullivaneuh/sonata-sandbox,morilog/sandbox,Soullivaneuh/sonata-sandbox