FS#10783 - WPS translation

- Use the %Sx skin tag in WPS to translate 'Next Track', 'Next', and 'of' (X of Y tracks)
- New conditional skin token 'Sr' which checks whether the currently loaded language is an RTL language (Hebrew/Arabic). It uses lang_is_rtl().
- Added Hebrew translation


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23638 a1c6a512-1295-4272-9138-f99709370657

apps/gui/skin_engine/wps_debug.c

@@ -490,6 +490,9 @@ static char *get_token_desc(struct wps_token *token, char *buf,
             snprintf(buf, bufsize, "Setting value: '%s'",
                  settings[token->value.i].cfg_name);
             break;
+        case WPS_TOKEN_LANG_IS_RTL:
+            snprintf(buf, bufsize, "lang: is_rtl?");
+            break;
         default:
             for(i=1; i<sizeof(tokens)/sizeof(*token); i++)
             {