sync up with viewer-development

...a/newview/skins/default/xui/da/panel_preferences_chat.xml

.../newview/skins/default/xui/da/panel_preferences_sound.xml

...a/newview/skins/default/xui/de/panel_preferences_chat.xml

.../newview/skins/default/xui/de/panel_preferences_sound.xml

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

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

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

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

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

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

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

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

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

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

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

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

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

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

...newview/skins/default/xui/en/panel_preferences_alerts.xml

...a/newview/skins/default/xui/en/panel_preferences_chat.xml