[IZPACK-1048]
  - Changed exception handling in plugin.
[IZPACK-1048]
 - Fixed typo in exception message.
Merge pull request #166 from khmarbaise/IZPACK-1048

[IZPACK-1048]
[IZPACK-1051]
  - Fixed maven-site-plugin for profile.
Merge pull request #167 from khmarbaise/IZPACK-1051

[IZPACK-1051]
Update to allow empty file field.
Changes to support empty file.
Test suite
Fix formatting problem
Merge pull request #168 from mheinze/master

Jira issue IZPACK-1058