Paste syntax functionality

[nuferates]

Under the advanced options in the Robmed and OLS Bootstrap tabs, there can be already a copy syntax (or paste syntax) button to transfer the syntax to the R script file.

It was a nice surprise to see it in the exported zip file, but we do not tell the user that they will get it anywhere in the interface.

[aalfons]

Such buttons would be superfluous. The replication script is provided anyway without any action by the user.

But I agree that the user of the GUI should be aware that a replication script is part of the exported files. One way to do this would be to show a preview of the code, similar to how we show previews of the diagnostic plot or the table. Since the output would become rather long, it may be good to have different preview tabs for diagnostic plot, table, and replication files.

We could also add a short message in gray on which files will be exported (similar to your suggestion in #24).