Improve sync syntax for more intuitive folder contents vs folder and contents sync

The issue

When you issue a sync command and specify the folder to sync, Indie Web Server inherits its functionality from the underlying rsync program. That is, if you specify the folder with a trailing slash, the contents of the folder are synced. If you do not include the slash, the folder and its contents are synced.

So:

web-server sync my-local-folder my.site --account=me --folder=my-remote-folder

Will result in the following directory structure on the remote server:

/home/me/my-remote-folder/my-local-folder

So both the folder and its contents will be synced to the destination.

If, however, you start Indie Web Server with:

web-server sync my-local-folder/ my.site --account=me --folder=my-remote-folder

It will result in the following directory structure on the remote server:

/home/me/my-remote-folder/

And my-remote-folder will contain the contents of my-local-folder.

While this is consistent with how rsync – which is what we’re using under the hood – works, it is far from intuitive.

Suggested improvement

1. Default functionality should be to sync the contents of the folder (99% of the time, this is what you would expect)
2. If you want to sync the folder itself along with its contents, you should specify that via a flag. e.g., --sync-folder-and-contents