add web-app/WEB-INF cruft that seems to be necessary for anything to run
check content type on PUT or POST
do content type check with beforeInterceptor
save & update should respond with entity representation
use some where blocks to test common conditions
update binding test

doesn't work with request.GSON
does work with request.JSON
does work in a unit test for a controller with request GSON
fucking Grails special case handling strikes again