Revert "Merge branch 'better-login' into 'master'"

httpsso/handler.go

httpsso/handler_test.go

httputil/session.go

httputil/session_test.go

proxy/proxy.go

saml/saml.go

server/device/manager.go

server/device/store.go

server/http.go

server/http_test.go

server/httplog_test.go

server/httputil/headers.go

server/httputil/renderer.go

server/httputil/static.go

server/integration_test.go

server/login.go

server/login/login.go

server/login/session.go

server/scripts/localserver.go

server/scripts/sri.go