Updated linter so test script works

[jaxoncreed]

The test script now works

Other Test and Linter Fixes:

• Mashlib (Updated linter so test script works #121)
• Solid-Panes (Fixed linters and tests solid-panes#296)
• Solid-UI (https://github.com/solid/solid-ui/pull/421)
• Rdflib (Fixed typing error linkeddata/rdflib.js#511)

[timea-solid]

I tested the changes locally. All modules build and tests passed.