Add "Check for Update" button to error alert when DB version is newer
Open update wizard in Standalone
Fix error merging items with relations in unsynced library
Better fix for merging items in unsynced libraries

Addresses a79872436
Check network errors against SEC error set as well
Merge pull request #412 from aurimasv/webdav-sec

Check network errors against SEC error set as well
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
Debugging and temporary fix for relations purging issue
Blacklist Firefox charset warning
Debugging for relations purging error that won't get cut off
Yet more relations purging error debugging
Disable full-text purging, for now

This isn't technically any slower than before, but if people were using
multiple computers, they might not have had their entire full-text index
on a single computer before full-text syncing.