message: Enable external links in counter selection UI
  Use QTextBrowser for the counter description widget, which allows for opening
  links in an external browser.
  This change is needed to make the link to NVIDIA Nsight Perf SDK clickable.
diff: </widget>
  </item>
  <item>
  - <widget class="QTextEdit" name="counterDescription"/>
  + <widget class="QTextBrowser" name="counterDescription">
  + <property name="openExternalLinks">
  + <bool>true</bool>
  + </property>
  + </widget>
  </item>
  <item>
  <widget class="QLabel" name="enabledCountersLabel">
  