Set default handlers if they are not set (even if some other handlers are set).
Merge pull request #231 from aurimasv/defaultHandlers

Set default handlers if they are not set
Use Zotero.wait() to move progress indicator

This may help with #230
Only set timeout to 50 if undefined
Recognize multiple items properly
Revert "Don't refresh item list upon tag selector actions unless the action changes the item list."

This reverts commit 7f732f56df4074a0af7a685481e570cbb3f7a5c4.
Remove "Try to override conflicting shortcuts" pref

I probably should have removed this years ago in 292c357e when I made
the shortcut keys only work within the Zotero pane.
Merge branch '3.0'
[Utilities] add cleanISSN
Allow translators to define translator-specific hidden preferences.
Tweaks to getHiddenPref()

- Remove references to configOptions, displayOptions, and hiddenPrefs
  from connector/translator.js. We can't rely on them to be set in
  Zotero.Translator since https://repo.zotero.org/repo/metadata doesn't
  provide them, but we shouldn't need them until we get the translator
  code anyway.
- Don't serve configOptions, displayOptions, and hiddenPrefs from Zotero
  Standalone server. There's no point in serving anything that
  https://repo.zotero.org/repo/metadata doesn't.
- Alias the translator metadata loaded into the sandbox as
  Zotero.Translate._translatorInfo. Use this to get configOptions and
  hiddenPrefs.
- "v" browserSupport indicates that a translator can be run through
  translation-server, not that translation-server is required.

This obviates the need for zotero/zotero-connectors#4.
Merge pull request #234 from aurimasv/cleanISSN

[Utilities] add cleanISSN
Merge branch '3.0'
Update citeproc-js to 1.0.422
Limit Google Scholar queries to one per 1.5 seconds

Hopefully, this will stop our users from getting locked out.
Detect CAPTCHA and stop trying to hit Google Scholar
Tweaks to WebDAV preferences
[Zotero_TranslatorTester] Move _generateDiff  and _compare out of prototype
Consider type-specific "title" alternatives for validating web translations
Merge pull request #236 from aurimasv/generateDiff

[Zotero_TranslatorTester] Move _generateDiff  and _compare out of prototype