#5 Add User Switch Functionality

[Oliver Steven Schlag]

Add a functionality to switch to the menusystem of the
current user. That will provide easy administration of
the system because an admin can directly see what a
user enduser sees.

[Oliver Steven Schlag]

Logged In: YES
user_id=121165

The user switch functionality requires a change in the main
login function. I think it will be a part for the rewrite
of the customer management module on which im currently.
Hope it will work in 2 days.