Fix duplicated layout name

Fixes #227

Author: v4hn

visualization/motion_planning_tasks/src/task_view.ui

@@ -116,7 +116,7 @@
        </item>
       </layout>
      </widget>
-     <widget class="QWidget" name="layoutWidget">
+     <widget class="QWidget" name="layoutWidget1">
       <layout class="QVBoxLayout" name="verticalLayout2">
        <property name="spacing">
         <number>0</number>