message: [Qt] Don't translate dummy strings in mnrow
  These strings are placeholders, treat them as such by not sending them
  to Transifex for localization.
diff: <item>
  <widget class="QLabel" name="labelName">
  <property name="text">
  - <string>user_masternode</string>
  + <string notr="true">N/A</string>
  </property>
  </widget>
  </item>
  <item>
  <widget class="QLabel" name="labelAddress">
  <property name="text">
  - <string>Address: 88.26.164.88:51474</string>
  + <string notr="true">N/A</string>
  </property>
  </widget>
  </item>
  <item>
  <widget class="QLabel" name="labelDate">
  <property name="text">
  - <string>Jan. 19, 2019</string>
  + <string notr="true">N/A</string>
  </property>
  </widget>
  </item>
  