Added:

+ The command /uf downloadRocketPicture to download rocket pictures. (Permission: UltimateFireworks.downloadRocketPicture)
+ The Message "Message.26" to the Messages.yml ("The picture will be downloaded...").
+ The Message "Message.27" to the Messages.yml ("The Plugin was unable to save the picture.").
+ The Message "Message.28" to the Messages.yml ("Picture saved.").
+ The Message "HelpText.12" to the Messages.yml ("This command is able to download pictures for the /uf rocketPicture command.").