Issue 4640: Make ajenti wondershaper plugin independent and installable from a zip file

Two changes:

- Remove install of customized reconfigure package. Functionality is now in the plugin itself.

- Plugin source code is downloaded a packaged file and decompressed in destination folder.

See related source code https://github.com/migonzalvar/ajenti-plugin-wondershaper/compare/0.1.0...0.2

Issue: https://sugardextrose.org/issues/4640