remote-config

When there are not enough results, we tell the user that the experiment just started, so come back later. When the experiment dates are set to a future time, this language doesn't fit very well. We should adjust the language to take this future state into account when figuring out the message.

<img width="875" alt="CleanShot 2022-04-10 at 21 23 22@2x" src="https://user-images.githubusercontent

Since drf_yasg2 is not being maintained anymore, we are left with two options:

1. Move back to drf_yasg, we can do that, but it does not support Openapi 3.0, so really we are left with one option to use https://github.com/tfranzel/drf-spectacular