Foundations to transform documentation repository into directory:
* Create ProjectInfo.cmake in documentation folder, to be picked up by
  Doxygit.cmake
* Rewrite Doxygit.cmake
* Move various settings from CommonCPack into Common to be able to use
  them earlier
* Extend and rename GithubOrganization -> GithubInfo
Update icons with PD versions
Implement Daniel's ordering
Merge pull request #98 from eile/master

Foundations to transform documentation repository into directory: