Better duplicate managemement

[0xPoly]

Currently network meter simply overwrites the old installation if a plugin is installed twice. NM should install use "plugin name", "plugin name 1", ... , "plugin name n" instead.

This should also allow for the internal plugin name and the displayed plugin name to be different.

[0xPoly]

@bassosimone actually I was wondering about this from a UX perspective. If the user attempts to install the same plugin twice, should we allow them? Or should we display an error message saying "plugin already installed" instead?

[bassosimone]

As a user I'd like to be able to overwrite a plugin, if I wish to do so. Usually advanced users know best than programmers what they need. But we are talking about a graphical interface, in which it's not so common to allow for potentially-destructive operations without warning. Hence, I'd ask the user with a modal "are you sure you want to overwrite this plugin?" [Yes] [No]. Another possibility is to do whatever MacOS does when you overwrite an existing application bundle. Usually Apple does it right as far as UX is concerned. Do you know what happens in this case?