Fix scrolling of additional packages on some systems (issue #12).
Bumped version to 1.2.1.
Fix app version check for major.minor.rev releases.
Fix unicode decoding error.
Allow renamed InstallESD images.
Fix loading of deprecated installers on 10.8 (issue #22).
Fix crash when primary gid has no corresponding group (issue #23).
Fix deletion of multiple packages from the additional packages list (issue #25).
Removed excessive debug logging.
Newest UpdateProfiles.
Merge branch 'version-1.2.1'