Yet another large batch of updates:

 - I rearranged some of the code and clean-up some of the mess.

 - Added "blocks" which can be user defined/controlled: check
   to see.  The positioning of blocks is rather basic for the
   moment, so I'm all open for input on that.

- intermediate commit: some bugfixes, changes and some drastic
  changes to block and module support

- a few more updates

- large batch of updates

- added module support and preleminary (read: example) modules