Add organization_name in autocomplete search

coin/members/autocomplete_light_registry.py

@@ -4,7 +4,7 @@ from models import Member
 # This will generate a MemberAutocomplete class
 autocomplete_light.register(Member,
     # Just like in ModelAdmin.search_fields
-    search_fields=['^first_name', 'last_name'],
+    search_fields=['^first_name', 'last_name', 'organization_name'],
     # This will actually data-minimum-characters which will set
     # widget.autocomplete.minimumCharacters.
     autocomplete_js_attributes={'placeholder': 'Other model name ?',},