Merge pull request #74 from dterweij/6.1.x

Project Issue #735. Fix apache virtualhost directive.
Merge pull request #75 from dterweij/6.1.x

Version Bump 6.1.16 & forum URL changes.
Remove not used images.
Pack themes for RPM distribution
Check for default theme packages (cleanup process).
Skip packing themes, makes package smaller.
Merge pull request #80 from dterweij/theme-package

Usage of Theme RPM packages for the Kloxo GUI.