Merge branch 'test-cleanup' into 'master'

packages/file-handling/package.json

packages/file-handling/rollup.config.js

packages/file-handling/test/unit.js

packages/knowledge-base-web-page-element-view/karma.conf.js

packages/knowledge-base-web-page-element-view/package.json

...ges/knowledge-base-web-page-element-view/rollup.config.js

packages/knowledge-base-web-page-element-view/test/unit.js

packages/language-select/karma.conf.js

packages/language-select/package.json

packages/language-select/rollup.config.js

packages/language-select/test/unit.js

packages/matomo/karma.conf.js

packages/matomo/package.json

packages/matomo/rollup.config.js

packages/matomo/test/unit.js

packages/notification/karma.conf.js

packages/notification/package.json

packages/notification/rollup.config.js

packages/notification/test/unit.js

packages/person-profile/karma.conf.js