In variable detail view, 'harmonisation status per data source' should be changed to 'harmonisation status per source'

[BrendaHijmans]

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What version of EMX2 are you using (see footer)
v11.22.0

Describe the bug
For consistency, in the variable detail view, 'harmonisation status per data source' should be changed to 'harmonisation status per source'. In the harmonisation matrix and variable overview, we also speak of 'sources' for cohorts, data sources etc.

To Reproduce
Steps to reproduce the behavior:

1. Go to e.g. https://data-catalogue-acc.molgeniscloud.org/catalogue/ssr-catalogue/EHEN/variables/prepreg_cig-LifeCycle-core-LifeCycle?keys={%22name%22:%22prepreg_cig%22,%22resource%22:{%22id%22:%22LifeCycle%22},%22dataset%22:{%22name%22:%22core%22,%22resource%22:{%22id%22:%22LifeCycle%22}}}
2. See the difference with e.g. https://data-catalogue-acc.molgeniscloud.org/catalogue/ssr-catalogue/EHEN/variables

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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