Hi,
You can customize them without writting template. For the header area, you would need to set ToolBarItems property:
http://doc.essentialobjects.com/library/1/eo.web.editor.toolbaritems.aspxLook for the third option ":", where you can use something like "New:New Document", here "New Document" should be your localized version. Note you can not change the first part ("New"), which stands for the command name. To see a list of valid command name. See here for a list of valid command names:
http://doc.essentialobjects.com/library/1/editor/commands.aspxTo localize the footer area, you would set DesignTabButtonText, HtmlTabButtonText, PreviewTabButtonText and BreadcrumbLabelText.
Thanks!