fixed a missing square bracket in SConstruct
implemented a memory slave

With this bit you can determine if a core is designed for a memory interface.

This will be more important for things like Axi but it is also useful for
the FPGA designer
using introspection to find calling function
working on the ibuilder project

the wizard now displays a page for the board types

The fpga designer has various small improvements
ibuider wizard and image designer is working

Users can now create ibuilder projects through a wizard

The FPGA image designer now is displaying a view