Custom data display builder uses the same logic to build both view and form dates for tab-displayed custom groups

CRM_Core_BAO_CustomField::addQuickFormElement() uses the same logic to build the display of the Select Date fields, no matter whether they are for viewing or for editing.

This is a bug, as the order of the fields should differ; when the field is being edited, the order should be the one specified in $config->dateformatQfDate (or $config->dateformatQfDatetime), while when viewing, the order should be the one specified in $config->dateformatFull (or $config->dateformatDatetime).

Note that this affects only the display of fields of custom groups that have their own tab; for inline custom groups we manage to display the dates properly.