EVA-3818: Fixes for biosample accession, xlsx conversion, and file filtering

[apriltuesday]

In addition to the code changes, updated the metadata template as follows:

• Help text for imputation/phasing now reads Enter '1' if this was an imputation analysis, otherwise leave blank
  • Technically we actually accept multiple values as True, but I was worried listing them would be too confusing
  • We now accept either '1' or 1 (with or without single quotes), so I removed the extra note emphasizing that
• Help text for BioSample accession was already correct (no mention of ENA or EGA), corrected a couple typos
• Bumped version to v2.0.1

[apriltuesday]

Failing tests are due to an issue in BioSamples, they are looking into it. Now fixed.

[tcezard]

Change looks good but we should update the other xlsx files.

[tcezard]

I've updated the tooltips for imputation and phasing to match the message in the help section.
We also need to update the other xlsx files in the repo to keep them in sync.
I was wondering if we should update the the minimum required version the realised that it is still set to 1.1.6
I think that should be updated to 2.0 at least

[apriltuesday]

Thanks, I've updated the other xlsx files (though not the tooltips...) and set the min required version to be 2.0.0.

[tcezard]

Maybe there should be a test that checks the different xlsx file in the repo have the same version so we know which one to update. We don't need to do it now though.