Fix NPE and related issues in bookmark management #1006
+30
−25
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Fixes https://freenet.mantishub.io/view.php?id=6142 and https://freenet.mantishub.io/view.php?id=6087.
Additionally visually improves the bookmark management page under the Winterfacey theme that was hardly usable due to lack of indentation.
Before:
After: