改进计数器编辑、预览状态和行为；修复移除source属性的影响、修改自检期间粘度计每次工作时间、更新翻译

scene/PicScheduleShiftItem.cpp

@@ -102,6 +102,11 @@ QImage PicScheduleShiftItem::itemImage()
     return backgroundImg;
 }
 
+void PicScheduleShiftItem::letterSpaceChanged()
+{
+    setSchedules(schedules());
+}
+
 QSize PicScheduleShiftItem::calcMaxSize()
 {
     if (m_schedules.isEmpty())