Oifs48r1 further reading

[nwieters]

This PR solves the option to put a further_reading entry inside a choose_version block.

closes #1085

[nwieters]

Hi @JanStreffing , @mandresm ,

this PR now enables to set further_reading inside a choose_version block.
I still need to test this, if it also works for setups.

I am not sure if this is the most elegant way. I had to workaround the fact that the function resolve_choose_with_var only searches for the variable version in a component config section and not in the general part. This is probably only needed for standalone models. And if the version variable is defined in the runscript general section. I hope I understood this correctly.

In the oifs48.env.yaml I had to comment out the settings for juwels since it complained about conflicting settings in a machine file.

[nwieters]

For setups it doesn't work so far.
For example: awicm3
It is complaining that in further_reading file oifs.env.yaml many of the ${computer.} variables can not be resolved.
Strangely also variables that are called for choose_computer block for mistral are tried to be resolved.

[mandresm]

The problems that @nwieters is facing are related to versions not being copied early enough from general to oifs section. I have modified that function and put it earlier in the workflow to solve the problem in #1097

[nwieters]

Ok. Thank you @mandresm . I guess this PR is obsolete now. I will close it.