User hint, if c4Scenario is already included in c4Folder

[Somebodyisnobody]

When a player joins a game and he must load the game content, he is offered to safe at least 2 resources, when the host started a scenario from the c4Folder.

The c4Scenario is already included in the c4Folder. The normal user doesn't know that. If he clicks on the disc symbol of the c4Scenario, it is saved permanently to disk beside the c4Folder.

This creates unwanted redundancy. Therefore I suggest to implement a special dialog, if the c4Scenario is already stored in the c4Folder. The Dialog should sound something like This resource is already available in foobar.c4f bundle. Do you really want to save it standalone or safe the whole bundle instead? (Save bundle|Save standalone|Abort)