All changes regarding e-mail discussion titled "Asset registry shenanigans".
Changes:
1. Engine now actively is getting rid of short asset paths in FStringAssetReference during saving (for all packages) and loading (only for older packages).
2. Deprecated direct access to FStringAssetReference.AssetLongPathname and exposed it via ToString and SetPath -- SetPath is making sure the path is in correct format. If the path can't be found on disk, the path is cleared.
3. Also access to FStringAssetReference.AssetLongPathnam via Blueprints is guarded using custom Make node function that uses SetPath instead of simple assign.
4. StringAssetReferenceMap will now contain only paths to packages (not objects) and ini references
5. GetDependencies now has additional parameter that lets you chose if it should resolve ini references or not. It was left not as default to keep old behaviour.
[CL 2630589 by Jaroslaw Palczynski in Main branch]
UETOOL-332 - Collections 2.0
UETOOL-373 - Check robustness of Collections 2.0
The collection manager will now fix-up any references to redirectors within its collections once the asset registry has finished discovering all the available assets. It also adds a watcher so it can pick up any moves or deletes as they happen.
All of this fix-up is applied to the in-memory copy of the collection, and doesn't get persisted to disk until it needs to be (because referenced redirectors are being deleted). This helps to minimize issues with source control availability and shared/private collections.
This change also makes sure that objects that are being referenced by a collection will leave a redirector behind, and also adds some extra context (such as the collection name) to some of the source control errors that may be reported when saving a collection.
[CL 2602519 by Jamie Dale in Main branch]
#jira UE-11567 - In Use By Level Filter disabled when renaming asset
#jira UE-11569 - Moving an asset In Use By Level is enabled will make it not visible in filter
#codereview Matt.Kuhlenschmidt
[CL 2508158 by Richard TalbotWatkin in Main branch]
https://github.com/EpicGames/UnrealEngine/pull/946
I have gone through these changes and verified that whatever behavior change they cause could only be an improvement (generally they just prevent possible access to nullptrs, but there are also some style corrections). A separate changelist is being prepared that includes changes that could unintentionally caues behavior change for the worse.
[CL 2486801 by Dan Oconnor in Main branch]
#UE4 Renaming assets no longer attempts to load all their referencers. This happens earlier in the rename process and is corretly skipped if being referenced by a map or already checked into SCC.
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Integrated using branch Ue4-To-UE4-Fortnite-Simple (reversed) of change#2401575 by Bob.Tellez on 2015/01/08 21:19:31.
[CL 2401576 by Bob Tellez in Main branch]
#ttp 348063 - Crash moving files in Content Browser
#branch UE4
#proj Developer.AssetTools, Editor.ContentBrowser, Editor.PackagesDialog, Editor.UnrealEd
[CL 2328547 by Richard TalbotWatkin in Main branch]
Removed UENUM() from EMyTownBuildingsWidgetSorting and EMyFortRatingStarSize to fix compile issues and because UENUM() was unnecessary.
Also made hand-fix to UAIHotSpotRenderingComponent by removing HeaderGroup (obsolete).
Did not merge TRV_HAF_Outer_012_lower_border or TRV_HAF_Outer_030 umaps due to conflicts and based on advice from Stefan.
[CL 2060490 by Daniel Broder in Main branch]
