File flags were lost when saving to a non-local file system

This broke in 9b3dd8c.
Bring project with unsaved documents to front during save warning

If multiple projects have unsaved documents then we show an app modal dialog (not a sheet).
NSPopUpButton already use correct default font
Create save dialog’s encoding options in code (using auto-layout)
Update byte order mark checkbox when changing encoding

We want to enable it for UTF-16/32 and otherwise disable it, which was previously the case but broke in acde8a019dd31ceb3b09d991f9fc78d66eb5a313.
Decrease size of save panel’s encoding options
Rename menu item to decrease default width of encoding pop-up
Update dialog plug-in (method signature presumably confusing ARC)
Don’t remember documents opened via ⌘G (Open Recent menu)
Don’t use bold nor shadow for tab titles on Yosemite

Closes #1270
Skip recreating replacement preview if nothing has changed
Checkin release notes