message: fix intro text
diff: <item>
  <widget class="QLabel" name="lblExplanation1">
  <property name="text">
  - <string>When you click OK, the client will begin to download and process the full %4 block chain (%2GB) starting with the earliest transactions in %3 when %4 initially launched.</string>
  + <string>When you click OK, the client will begin to download and process the full %1 block chain (%2GB) starting with the earliest transactions in %3 when %4 initially launched.</string>
  </property>
  <property name="wordWrap">
  <bool>true</bool>
  