IZPACK-1168 Bugfixing sprint week 38, fixes at the moment:
- IZPACK-1165 Package names not translated
- IZPACK-1167 Avoid unclosed stream during unpacking
- IZPACK-1166 Re-introduce panel translations using the panel id as key without the classname as prefix
Merge pull request #276 from rkrell/IZPACK-1168

IZPACK-1168 Bugfixing sprint week 38