* various .def scripts updates
* added cmd.def & getchatitem.def
* fixed: correctly check variable names in function "isset"
* fixed problems with loading scripts that cosist captalized IF/ENDIF/LOOP/ENDLOOP statments. now upper, lower and mixedcase work as they should.
-> moved conf loading from core to scripts.
*New DefScript call: _leaveworld.def
*Fixed crash when calling _leaveworld on ~WorldSession()
* some updates to internal variable name handling
* added new macro: @n : newline (\n)
* cleanups
* added a bunch of new scripts + examples