warn nsfw (for PRs). add lovely message under html preview.

app.py

@@ -55,13 +55,17 @@ def duplicate(source_url, preview_url, model_id, dst_repo, token, repo_type, nsf
 
         if nsfw==True:
                 repopath=repopath+"/nsfw"
+                commitmessage=f"{filename} (nsfw)"
+                previewhtml=previewhtml+"<br>now isn't that a lovely picture?"
+        else:
+                commitmessage=filename
 
         ret=api.upload_folder(
                 folder_path=dir,
                 path_in_repo=repopath,
                 repo_id=dst_repo,
                 repo_type="model",
-                commit_message=filename,
+                commit_message=commitmessage,
                 commit_description="source: "+source_url+apimd+previewmd,
                 create_pr=make_pr
         )