#5 Fix user/login

[Magnus Lyckå]

Currently, SystemSpecifyer has only been used as a
single user system, but it's prepared for multi user
use. Only owners of an element can change an element.

Since I (Magnus) has been debugging Danny's database
files, I've set the program to use "Danny" as user
name. This should be changed. Today, I suggest using
wxWindows default user name unless a unser name is
given in the ini-file.