Skip non-group config elements while parsing hosts. Add host comment field.
Add $comment Tcl variable.
Update localization files.
Update German translation.
Add host comment as environment variable.
Update xmlreport elements and DTD file.
Update fixed issues & bugs.
Drop incomplete config convert scripts.
Update dependencies and copyright.
Update copyrights.
Merge pull request #45 from liske/master

Merge release preparations.