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

tools/editor/editor_settings.cpp

@@ -507,6 +507,8 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	set("resources/save_compressed_resources",true);
 	set("resources/auto_reload_modified_images",true);
 
+	set("import/automatic_reimport_on_sources_changed",true);
+
 	if (p_extra_config.is_valid()) {
 
 		if (p_extra_config->has_section("init_projects") && p_extra_config->has_section_key("init_projects", "list")) {