tools: hide more clutter from Project Browser

tools/level_editor/project_browser.vala

@@ -12,9 +12,13 @@ namespace Crown
 	private bool row_should_be_hidden(string type, string name)
 	{
 		return type == "<folder>" && name == "core"
-			|| type == "wav"
-			|| type == "png"
+			|| type == "dds"
 			|| type == "importer_settings"
+			|| type == "ktx"
+			|| type == "ogg"
+			|| type == "png"
+			|| type == "pvr"
+			|| type == "wav"
 			|| name == Project.LEVEL_EDITOR_TEST_NAME
 			;
 	}