The error is triggered upon initial interaction with a doc after Zotero
restart or if new external citations (copied into the document) are
peresnt and `session.updateSession()` is called without a subsequent
`session.updateDocument()` call. `session.updateSession()` is called
without a subsequent `session.updateDocument()` call every time the
user cancels a citation insert.
More specifically, `session.updateSession()` is called every time a
citation dialog is invoked. It retrieves all citations and writes them
into a local `session.citationsByIndex` object. Moreover, it marks
each citation that hasn't seen before in a `session.newIndices` object.
`session.newIndices` is there to ensure that we load every new citation
into citeproc upon document update. This object is built by marking any
citation that does not appear in the previous invocation's list of
citations as new. However, if the document is never updated (because the
user cancels the insertion) then the new indices are not loaded
into citeproc. This commit fixes that, by excluding citeproc unloaded
items from the previous invocation's citation list.
The progress percentage is based on the most recent transaction
(or undeterminate if this is the first session transaction)
Fix undefined function call error
- Moves a bunch of citation related processing from Integration.Session
- Replaces missing item handling with a function instead of exception
- Solves some really confusing flow issues in _processFields
