Revert "Fixes to make more robust to Zotero errors"

This reverts commit 9e1b173c6235fbd3ddf0bdb4373aa06e14268b0d.

Change-Id: Ic70ab59335e7de63ee2bf5a6be9a2e5f6ecf299f
Merge "Revert "Fixes to make more robust to Zotero errors""