Add "Check for Update" button to error alert when DB version is newer
Open update wizard in Standalone
Change "files" to "items" in library-access-denied message
Move import.charset preference element to the correct prefpane
Merge pull request #421 from aurimasv/import-charset-pref

Move import.charset preference element to the correct prefpane
Fix "columns itemID, tagID are not unique" sync error

I'm not sure what's causing this, but it will quite likely go away in
4.1 regardless.
Update versions, submodules, and repotime
Update locales from Transifex
Tweak the text a bit in #410
Merge branch 'db-update' into 4.0
Update locales
Merge branch '4.0' of https://github.com/zotero/zotero into 4.0