#ttp 334601 - Crash: Live: Setting and Unsetting Use Localized Field Name
#branch UE4
#change Model wasn't disassociating itself with the OnSettingsChanged delegate when it was destroyed... which meant next time the settings were changed the delegate was being called with a stale pointer.
reviewed by Thomas.Sarkanen
[CL 2089501 by Andrew Brown in Main branch]
TTP# 333731 - EDITOR: The editor region doesn't always seem to get set correctly on non-English systems
If you'd previously not set a language in the editor, the "Region & Language" settings would always show you the option for "en_US_POSIX" (and claim that you needed to restart the editor) because the saved culture name ("") didn't match the FInternationalization culture name (eg, "en_GB"), causing it to call GetCulture with an empty string (which seems to cause ICU to return "en_US_POSIX"). It now just uses the current FInternationalization culture name if the saved culture is empty.
Additionally, the editor/game now verifies that it has an available translation for the culture that FInternationalization is using (the one set during startup). If it doesn't (eg, your PC is using "fr_BR") then it will fallback to using generic English ("en") to ensure that the editor/game always has a valid translation to use.
ReviewedBy Saul.Abreu
[CL 2068467 by Jamie Dale in Main branch]
