Do not annoy unrelated textures with texture editor.

editor/plugins/texture_editor_plugin.cpp

@@ -141,7 +141,7 @@ TextureEditor::TextureEditor() {
 //
 bool EditorInspectorPluginTexture::can_handle(Object *p_object) {
 
-	return Object::cast_to<Texture>(p_object) != NULL;
+	return Object::cast_to<ImageTexture>(p_object) != NULL || Object::cast_to<AtlasTexture>(p_object) != NULL || Object::cast_to<StreamTexture>(p_object) != NULL || Object::cast_to<LargeTexture>(p_object) != NULL || Object::cast_to<AnimatedTexture>(p_object) != NULL;
 }
 
 void EditorInspectorPluginTexture::parse_begin(Object *p_object) {