Adjust ECEMF mapping

[robertpietzcker]

Purpose of this PR

update ECEMF mappings and tutorial on Excel use

Checklist:

• I checked that using Excel had no side-effects occur (changed values, many new quotation marks, …)

[robertpietzcker]

@fbenke-pik I have no idea why the WHOLE files checkUnitFactor.R and renameOldVariables.R are shown as changed when I don't tick "hide whitespace"?

I can't remember changing anything in renameOldVariables, and in checkUnitFactor I didn't do anything except change one line in this file in RStudio

[orichters]

@fbenke-pik I have no idea why the WHOLE files checkUnitFactor.R and renameOldVariables.R are shown as changed when I don't tick "hide whitespace"?

I can't remember changing anything in renameOldVariables, and in checkUnitFactor I didn't do anything except change one line in this file in RStudio

That is probably just the line endings that have changed. Can you please add a file .gitattributes that just contains the following:

* text eol=lf

I hope this might fix it.

[robertpietzcker]

I already have such a file with exactly that content in my folder?

[orichters]

I already have such a file with exactly that content in my folder?

🙈 I forgot that I already added it. Then this is fine, it just harmonizes all files to the same line endings and in this case it adapts them.