Show a better error when citeproc-js requests an non-existent item
Exclude underscores from search strings

Fixes http://forums.zotero.org/discussion/28585/
fr-FR: "Tous champs & Marqueurs" -> "Champs & Marqueurs"
Update citeproc-js
Update citeproc-js
Update submodule
Update versions
First z.org release is 4.0.1. (AMO will be 4.0.)
Update version
Fix Bug not being able to set attachmentBasePath.
Ignore file.fileSize error when calculating upload file size
Don't double-encode extended characters in relative paths

Fixes #287
Update locales from Transifex
Fix ⏎ characters in es-ES, fr-FR, and ja-JP
Fix "this._deferred is null" WebDAV sync error

This occurred if an attachment had only files beginning with periods.
fr-FR: Redo "Champs & Marqueurs" change
Fix a few more potential file sync errors