Config logo can be unchecked, close #494

class StateChecker(QCheckBox):

    checked = Signal(str)

    def __init__(self, checker_type: str, *args, **kwargs) -> None:

    unchecked = Signal(str)

    def __init__(self, checker_type: str, uncheckable: bool = False, *args, **kwargs) -> None:

        super().__init__(*args, **kwargs)

        self.checker_type = checker_type

        self.uncheckable = uncheckable

    def mousePressEvent(self, event: QMouseEvent) -> None:

        if event.button() == Qt.MouseButton.LeftButton:

            if not self.isChecked():

                self.setChecked(True)

            elif self.uncheckable:

                self.setChecked(False)

    def setChecked(self, check: bool) -> None:

        check_state = self.isChecked()

        super().setChecked(check)

        if check_state != check:

            if check:

                self.checked.emit(self.checker_type)

            else:

                self.unchecked.emit(self.checker_type)

class LeftBar(Widget):

    recent_proj_list = []

        self.imgTransChecker.setObjectName('ImgTransChecker')

        self.imgTransChecker.checked.connect(self.stateCheckerChanged)

        self.configChecker = StateChecker('config')

        self.configChecker = StateChecker('config', uncheckable=True)

        self.configChecker.setObjectName('ConfigChecker')

        self.configChecker.checked.connect(self.stateCheckerChanged)

        self.configChecker.unchecked.connect(self.stateCheckerChanged)

        actionOpenFolder = QAction(self.tr("Open Folder ..."), self)

        actionOpenFolder.triggered.connect(self.onOpenFolder)

            self.configChecker.setChecked(False)

            self.imgTransChecked.emit()

        elif checker_type == 'config':

            if self.configChecker.isChecked():

                self.imgTransChecker.setChecked(False)

                self.configChecked.emit()

            else:

                self.imgTransChecker.setChecked(True)

    def needleftStackWidget(self) -> bool:

        return self.showPageListLabel.isChecked() or self.globalSearchChecker.isChecked()