Decapod 0.6 server architecture spec

[Justin Obara]

I've written up a new server architecture spec specific to what we plan to implement for Decapod 0.6.
http://wiki.fluidproject.org/display/fluid/Decapod+0.6+Server+Architecture

The majority of the changes from Decapod 0.5 are in the export section where we plan to expose more of the genpdf options and to add tiff export.

Thanks
Justin