update(ui): set default language

Author: Guts

profile_manager/profile_manager_dialog_base.ui

@@ -13,6 +13,9 @@
   <property name="windowTitle">
    <string>Profile Manager</string>
   </property>
+  <property name="locale">
+   <locale language="English" country="UnitedStates"/>
+  </property>
   <property name="sizeGripEnabled">
    <bool>false</bool>
   </property>