Merge pull request #9 from NochEinDirk/my-contribution

www/playlists/index.php: Looks well now ...
Merge pull request #10 from NochEinDirk/my-contribution

www/playlists/index.php: Paging of playlists is working ...
impressum/index.php -> about/index.php && minor changes ...
inc/common.inc.php: CONFIG_PROJECT_* added -> More general implementation