message: Clarify the debug ui transaction pool naming
diff: <item row="15" column="0">
  <widget class="QLabel" name="labelNumberOfTransactions">
  <property name="text">
  - <string>Current number of transactions</string>
  + <string>Transactions in Memory pool</string>
  </property>
  </widget>
  </item>
  <item row="17" column="0">
  <widget class="QLabel" name="labelMemoryUsage">
  <property name="text">
  - <string>Memory usage</string>
  + <string>Memory pool usage</string>
  </property>
  </widget>
  </item>
  </font>
  </property>
  <property name="text">
  - <string>Memory Pool</string>
  + <string>Transaction Pools</string>
  </property>
  </widget>
  </item>
  