The display name, filter string, and tooltips for the property editor (and associated detail customizations) are now stored as FText rather than FString. This allows us to remove SLATE_TEXT_ARGUMENT from the detail customization widgets.
[CL 2372595 by Jamie Dale in Main branch]
#ttp 345473 - NUX:Material Instance Editing: The parameters I exposed are collapsed at the bottom of Details, they should be right at top!
#branch UE4
#proj Editor.MaterialEditor
#reviewedby Matt.Kuhlenschmidt
[CL 2305624 by Richard TalbotWatkin in Main branch]
TTP#335353 - EDITOR: Event and axis mapping group expansion behavior is unintuitive
Expansion state was based on the name of the action/axis mapping so when one was renamed it had no state for the new name. Added code to record the state of expansion before renaming and reset it once the mapping groups have been recreated. This required a new function adding to the IDetailGroup class so that I could record its expansion state and I also needed to be sure I only recorded the state when the commit callback actually changed something.
[CL 2119224 by Matthew Griffin in Main branch]
