The old one was result of experimentation. The backend address should be 
/api so it works out of the box.

The mock is nw the default, the old dev file was of no use outside the 
setup project, so it is kept there now.

Now we again have a dev and prod variant and the user needs to run 'make 
init-dev-config'at first time setup.

rename TERMINATING to TERMINATED wo have the one reported to backend/monitor to be TERMINATED and teh internale state (former TERMINATED) wich cames when locking was successful to FINISHED (not LOCKED because possible future confusion)

new booklet config parameters implemented: page_navibuttons, unit_menu, unit_screenheader, unit_title (not all options)

introducing srcdoc polyfill for edge

interceptor + php slim ...
compiles without errors, login working