remove static_interface directory

This was a static version of simsam with dummy images that people who
didn’t have django set up would use to try out interface ideas & play
with css. Not really necessary anymore.
remove sitestatic/images

Unused duplicate directory, simsam_app/images used
remove sitestatic/css

Unused duplicate
remove sitestatic/js

Unused directory
remove iphone-style anything

was used in old interface. Don’t need it anymore.
remove chooseproject.html

This has been integrated into home.html