Change UCP display option selects from being hardcoded

The various select options present in the Edit display options page of the UCP is hardcoded, with the template variable creating the full select option.

This is rather problematic for people who wish to completely re-style their phpBB forum. Currently styling the select fields means altering a core file; there are no classes present so you are unable to use a pre-defined css class name either.

Much like the rest of the software (user profile group select springs to mind!) the options of the select should be sent to the template to allow for full stylistic control.

Affected Template: ucp_prefs_view

Affected Script: includes/ucp/ucp_prefs.php (lines 343 to 370ish)