Don't fail during file upload if file doesn't yet exist
Show patents by issue date in timeline view
Fix "req is not defined" error message (which indicates a WebDAV error)
Fix cleanISSN
Closes #397, Support authenticated PAC setups in Standalone

Trigger a proxy authentication prompt at startup if a PAC file is
installed and one of a few randomly chosen big sites requires a proxy.

This also improves general proxy detection by not making a request
to S3 unless it would actually be proxied.
Read 200 bytes instead of 128 in Zotero.File.getSample()

This allows Zotero to detect PDFs with more gibberish at the beginning.

https://forums.zotero.org/discussion/32550
Fix "Open Documentation" button in WebDAV verification cert error dialog
add report to COinS export and add some import support
Tweaks to #384

- Prefer btitle to title for OpenURL 1.0
- Remove unnecessary institution mapping (base-field mapped to publisher)
- Formatting fixes
Merge pull request #396 from aurimasv/cleanISSN

Fix cleanISSN
Store inter-group linked-item relations with target, not source, library

User may not have write access to source library
Don't try to index non-text files when importing from document

Also call the callback when importing PDFs from the document. I'm not
sure why this wasn't called before, but it seems like it should be.
Fix PDF tools prompt on pref window open if Search pane not yet loaded
Fix colored tags in group libraries

Pressing the number keys was pulling in colored tags from "My Library".
Don't attempt to select items that are not in the item tree
Merge pull request #408 from aurimasv/dupFilter

Don't attempt to select items that are not in the item tree
Close transaction before updating progress indicator

Should fix #230
Remove Zotero.wait() from Zotero.Collection.addItems

Since this is inside a transaction, it could potentially cause more
state check errors
Don't delete collection on partial import
Blacklist some more messages from error reports