Appupdater 1.4.2 Released

This is primarily a bugfix release.

New:

- 2011 Signing Key for Nabber.org
- Added License information to main table

Bugs:

- Fixed proxy GUi configuration
- Dependency handling
- Unzip program crashing
- GUI now shows all locations a package is installed
- Fix for when using install button more than once
- Bugfix for when metalink checksum fails
- Fix for options import/export
- Fixed exiting AppUpdater GUI trashes configuration file
- Fixes for Linux