Deprecate OwncloudClient - Comments

[ZetaTom]

This is one of a series of pull requests which aim to replace all instances of OwnCloudClient with NextcloudClient. The reason for this change is that the newer NextcloudClient uses OkHttp, replacing the outdated Jackrabbit methods.

Specifically, this pull request implements the following:

• operations related to comments
• fix comments not loading properly
• see Deprecate OwncloudClient - Comments android-library#1295

---

• Tests written, or not not needed

[github-actions]

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[github-actions]

Codacy

Lint

Type	master	PR
Warnings	69	69
Errors	3	3

SpotBugs

Category	Base	New
Bad practice	64	64
Correctness	68	68
Dodgy code	340	340
Experimental	1	1
Internationalization	7	7
Multithreaded correctness	6	6
Performance	57	57
Security	18	18
Total	561	561

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/12464.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.

[github-actions]

blue-Light-Screenshot test failed: https://www.kaminsky.me/nc-dev/android-integrationTests/12464-Screenshot-blue-Light-14-09