bindata.go must be generated with https://github.com/jteeuwen/go-bindata. From the gotests root run `$ go generate ./...`. Or run `$ go-bindata -pkg=bindata -o "internal/render/bindata/bindata.go" internal/render/templates/`. During development run `$ go-bindata -pkg=bindata -o "internal/render/bindata/bindata.go" -debug internal/render/templates/` instead.