Plugin call was broken because of a merge error.
add config parameter 'index' and 'key' for plugins
This allows (optional) to config an user definied sort and setup rc-key for plugin via
plugin.cfg.
Sort by filename is still working as before in second instance.
git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-beta@1660 e54a6e83-5905-42d5-8d5c-058d10e6a962