Suggestion: add support for uninstalling/removing packages

[mouthmantra]

Pretty self-explanatory. Would be great to have an option where it maybe shows recently added packages and provide a way for them to be removed, in order to mitigate the need to use the Terminal to do so.

[teamcons]

Hi!

That was the OG plan. Have the app save a list of what it installed, and offer to uninstall as well

PackageKit documents well how to install a list of local package files, but the rest of the documentation is an unintelligible mess, so i gave up that part for now.

Maybe ill get around to it, but there are a couple bigger issues with Unboxing to deal with before.