Add `__repr__` method to `OldPluginWrapper` so proper name is displayed.
Add `__repr__` method to `OldPluginWrapper` so proper name is displayed.

This is only really an issue in the plugin settings views.

sheagcraig/sal,salopensource/sal,salopensource/sal,sheagcraig/sal,sheagcraig/sal,sheagcraig/sal,salopensource/sal,salopensource/sal