Update code to work with new hook names and select list handling

In my patch in #245424-293: Make Webform multilingual (i18n) aware through contributed modules I moved the inserting of #options into _webform_display_select(), so the #options array already exists by the time webform_localization_webform_display_component_alter() is called. This makes it so we can remove the select-specific handling from the display code.

This patch also includes renaming the hooks per my comments in the other issue.