* If one of 'options-messages', 'options', or 'options-message' is provided
* and non-empty, the select dropdown will be shown. An 'other' key will be
* appended using message 'htmlform-selectorother-other' if not already
* If one of 'options-messages', 'options', or 'options-message' is provided
* and non-empty, the select dropdown will be shown. An 'other' key will be
* appended using message 'htmlform-selectorother-other' if not already