* installation will be now done with AJAX request (jQuery), that will instaltly notify about the status of the installation (no waiting without clue anymore)
* install items & weapons on installation (before monsters)
* this requires loaded items - go to admin panel and select Items menu, then reload
* added items.xml loader class and weapons.xml loader class
* load also runes into spells table
* (internal) changed spells.vocations database field to store json data instead of comma separated
* (internal) renamed existing Items class to Items_Images