🎨 Minor fixes and code restructuring

[danieladugyan]

There are a few annoying warnings that pop up during development. There's also no need to place our backend inside backend/services/core when it is our only service. It was probably done in an attempt to promote a microservice architecture, but for our purposes a simple backend folder will suffice.

Tasks

Beta Give feedback

1. Fix reloadOnPrerender warning
2. Move backend/services/core to backend