Update itembox.xml

Corrects a tiny bug where pressing minus button to remove an unsaved creator row creates incorrect behaviour in the plus button in preceding row. Done in preparation for a fix I have locally for issue #251.  Please advise if I have your preferred workflow wrong.
Colored tags weren't shown in collections with no other tags
Don't deselect tags unnecessarily

https://forums.zotero.org/discussion/28842/

Related to 4e1fbf974
Add icons to context menus
Fix icon for "Remove Item from Collection"
Fix "Source item for keyed source doesn't exist" sync error

This could occur in 4.0 if a standalone attachment was modified locally
and remotely was changed into a child attachment.
Fix spacing in sync auto-merge dialogs
Merge commit '915a579' into 4.0
Disable context menu icons on OS X
Display note title even if first line is just an opening HTML tag

https://forums.zotero.org/discussion/28857/#Item_14
Fix comment
Fix Attachment Content regexp search
Use renamed-styles.json and flag from repo to replace renamed styles

Currently updating renamed-styles.json is a manual process.
Update versions
Tweak timeouts and add additional debugging info for IE Standalone XDR
Don't forget to call fail() after debug messages from IE XDR
Make bookmarklet origin configurable for tests
Revert XDR timeout changes from 11316d952b836d193012421ed51f64dc84521b49
Fix race condition when running bookmarklet from Standalone server
IE doesn't support normalize