STORM-685 FIXED Made the "Buy L$" floater respect transparency settings.

Enabled the floater's background icons obey floater transparency.

indra/newview/skins/default/xui/en/floater_buy_currency.xml

@@ -20,6 +20,7 @@
      left="0"
      name="normal_background"
      top="17"
+     use_draw_context_alpha="false"
      width="350" />
    <text
      type="string"
@@ -292,6 +293,7 @@ Re-enter amount to see the latest exchange rate.
      left="0"
      name="error_background"
      top="15"
+     use_draw_context_alpha="false"
      width="350"/>
     <text
      type="string"