symphonycms/selectbox_link_field — pull request #68 by nitriques (2014-06-26 19:42:22+00:00)
Title: Relationship is required

This add the data-required attribute in order to
remove the 'none' option in the select box. This fix requires a core change,
which is https://github.com/symphonycms/symphony-2/pull/2114