Different 1D experiment types

@lpatiny @jobo322
When we load-in some data files then the 1D experiments can have different experiment types.
In general we assume the return of "1d" by nmr-parser which is also implemented in nmr-correlation to detect the 1D experiments we need there.
Sometimes we get "13c", "c13", "carbon" or "proton" as experiment type which can happen if there is an unknown pulse sequence string for nmr-parser and the original string is returned.

How to deal with that?
Should we maybe add an opportunity to change this information somewhere in the spectra or info panel?

And also the prediction method of 1D proton or carbon gives us "proton" or "carbon" as experiment type which contradicts the general return string ("1d") from nmr-parser.