Make Frontend/Backend dev guides sync up

[eadgbear]

Hello!

While trying to follow your project's guides I find that not having the frontend/backend guides converge is a bit of a misstep. The frontend guide should really end with fetching resources that were created as part of the backend guide, or at least have some better examples of fetching resources.

It would also be appreciated if those guides were updated to match the most recent template :)

[marteinn]

Thanks for the feedback @slyons! Will take this into consideration when we put more work into the docs.