implemented Itemset detail page
 - while the code and strings are there, no rules have been set concerning availability

User:
 - HTTP_ACCEPT_LANGUAGE may not be set.

Compare:
 - removed some relic code, that, once uppon a time, was used to link virtual item sets with real item sets or something..

Titles:
 - fixed a few forgotten changes

Lang:
 - hide DND-entries for locks

BaseType:
 - improved getField to automaticaly cast numerics to float
 - improved __construct to check for numeric instead of int