[BUG] 4.1.1 composes /app/list path wrong when instance is installed in subfolder (/owncloud)

[Aitorbp]

Related Issues

App: https://github.com/owncloud/android/issues/4279

• [x] Added changelog files for the fixed issues in folder changelog/unreleased. More info here

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QA

[jesmrec]

QA checks

• [X] URL without subfolder without trailing slash
• [X] URL without subfolder with trailing slash
• [X] URL with subfolder without trailing slash
• [X] URL with subfolder with trailing slash

[jesmrec]

approved on my side