Changed import workflow

-Rearrange favorites in fs dock with drag and drop
-Removed import -> sub-scene, moved to scenetree contextual menu
-Removed import -> re-import , moved and integrated to FS dock
-Added ability in FS dock to re-import more than one resource
simultaneously
-Added ability to drag from native filesystem explorer to Godot, only
works on Windows though
-Removed scene reimport merge options, never worked well. Eventually
merging materials should be re-added
-Added ability to set custom root node type when importing scenes
-Re-Import is now automatic, can be configured back to manual in editor
settings
-Added resource previews in property list for many resource types

core/resource.h

@@ -142,8 +142,12 @@ public:
 	Ref<ResourceImportMetadata> get_import_metadata() const;
 
 
+
+
 #ifdef TOOLS_ENABLED
 
+	uint32_t hash_edited_version() const;
+
 	virtual void set_last_modified_time(uint64_t p_time) { last_modified_time=p_time; }
 	uint64_t get_last_modified_time() const { return last_modified_time; }