Bank now uses imperials (1000 gold) for withdrawls and can do enchanges
of currency to platinum. Added a cleanup routine in the
python_remove script to delete account when players quit.
A transaction fee was implemented for deposits (default 5%)
requires use of new arch "imperial" (bank notes with no
intrinsic value)
git-svn-id: svn://svn.code.sf.net/p/crossfire/code/trunk/maps@2350 282e977c-c81d-0410-88c4-b93c2d0d6712