Fixed bugs detected during parsing NXapm_compositionspace_results int…

[mkuehbach]

Fixed bugs detected during parsing NXapm_compositionspace_results into the NOMAD feature branch on developing a NOMAD app for atom probe, further context via pynxtools-apm apm_app and apm_app_tools branch, part of issue #36 on www.github.com/FAIRmat-NFDI/pynxtools-apm.git

[mkuehbach]

@srmnitc @thohamm @Alaukiksaxena anybody, feel free to merge in after the DFG symposium.
This PR implements a bug fix to allow drag-and-drop parsing NXapm_compositionspace_results and making searchable content of NeXus files straight in NOMAD.
On a sidenote (also in prep for the paper @thohamm, @hickel), results from paraprobe-toolbox are have been made substantially more searchable in a NOMAD feature branch focusing on atom probe. We are currently working on making this available in the main development branch of NOMAD as well.
FYI @sanbrock

[mkuehbach]

@Alaukiksaxena or @srmnitc CompositionSpace version should be bumped from 0.1.4 to 0.1.5 to make a new conda release for these changes to take effect once this PR has been merged.