plugins - draft 1 ..
Merge pull request #1 from jdlx/plugins

plugins - draft 1 ..
example class for getting slice objects sorted by prio
Merge pull request #2 from IngoWinter/master

example class
Update config.inc.php
Update README.textile
fix path and array_walk error

Signed-off-by: Joachim Doerr <mail@joachim-doerr.com>