Migrated rpdata-api to using go modules and a more recent version of

gqlgen

Squashed commit of the following:

commit 162ccf6bfb
Author: Gisle Aune <dev@gisle.me>
Date:   Fri May 17 11:51:23 2019 +0200

    The great module madness continus, now with pointers.

commit 7e3dc49635
Author: Gisle Aune <dev@gisle.me>
Date:   Thu May 16 15:57:08 2019 +0200

    Basic stuff, doesn't compile

Dockerfile

@@ -1,16 +1,12 @@
 ## 1. Build Server
-# Use Go 1.10
-FROM golang:1.11 AS build-server
+# Use Go 1.12
+FROM golang:1.12 AS build-server
 
 # Load repository into docker
-WORKDIR /go/src/git.aiterp.net/rpdata/api/
+WORKDIR /project/
 COPY . .
-RUN rm -rf ./vendor
 
 # Install build tools and dependencies
-RUN go get -u github.com/golang/dep/cmd/dep
-RUN go get -u github.com/vektah/gorunpkg
-RUN dep ensure
 RUN go generate ./...
 
 # Build server and tools (CGO disabled to make them 100% static)