Issue #1139238 by wondex, s_leu: Add relevant meta data in the 'potential_references' db query to allow smart alteration.

referenceable targets generated by views).

Reference views if it is not present in the view definition.

user name as a field).

Issue #1194086 by Dave Reid, mariagwyn, yched: Display entity labels through entity_label() (formatters only for now)

#1219224 by kunago, michaelfavia, yched: Added support for optgroups in select widgets (for referenceable nodes/users provided by a view).

Issue #988856 by Nephele, johnv, rickmanelius, BlakeLucchesi ... : Added Feeds mapper for node_reference and user_reference fields.

#1051624 by Stalski: Added 'rendered user in a given view mode' formatter for user_reference fields.

Issue #1094406 by h0tw1r3: Added Account for the 'view own unpublished content' perm when displaying referenced nodes

Issue #1149600 by yched: fix 'Undefined index error' in _[user|user]_reference_view_settings_validate().

Issue #1154998 by yched: Rename _node_reference_potential_references() to node_reference_potential_references().