Adding New Systempreference AddPatronLists
This systempreference allow administrator to choose if patrons are created on categorycode lists or category_type ones.
Overloading GetBorrowerCategory so that if no parameter provided, it returns the list of category records
Changing memberentry.pl in order to use the categorycode when provided.
Bug Fixing Circulation.pl so that doesnot come up with Error 500
with no category selected for GetBorrowerCategory
Signed-off-by: Joshua Ferraro <jmf@liblime.com>