Translation cleanups and xml fixes

Removes some areas where grid-specific currency was not being used.
Removes old, obsolete files.

indra/newview/skins/default/xui/fr/strings.xml

@@ -51,7 +51,7 @@
 		Toucher
 	</string>
 	<string name="TooltipFlagL$">
-		L$
+		[CURRENCY]
 	</string>
 	<string name="TooltipFlagDropInventory">
 		Laisser tomber l&apos;inventaire
@@ -69,7 +69,7 @@
 		Copie autoris&#xE9;e
 	</string>
 	<string name="TooltipForSaleL$">
-		A vendre : [AMOUNT] L$
+		A vendre : [AMOUNT] [CUURENCY]
 	</string>
 	<string name="TooltipForSaleMsg">
 		A vendre : [MESSAGE]