fixed: use 'cryptsetup luksUUID' to retrieve UUIDs of luks devices
added: analyse request URL andd add information to hdf dataset
added: attribute 'device' is persistent (like 'weblang') to allow redirects between volume plugins
changed: moved URLs of plugins from 'plugins/???' to '???' (flat hierarchie -> simple links)
added: new action for all plugins: "redirect" - call specific plugin after completing the current one
fixed: permission fix for vfat filesystems during mount / for ext2/3: after mount
regular checks for config partition (mount, if it becomes available)
added "do_unittests.sh" - this script should be used to run all unittests before commit
fixed nasty "cannot-switch-languages"-bug
fixed language data loading for plugins
