Merge pull request #1247 from tsigo/feature/no_milestone_filter

Allow filtering issues that have no milestone or assignee

app/helpers/issues_helper.rb

@@ -36,4 +36,11 @@ module IssuesHelper
   def issue_tags 
     @project.issues.tag_counts_on(:labels).map(&:name)
   end
+
+  # Returns an OpenStruct object suitable for use by <tt>options_from_collection_for_select</tt>
+  # to allow filtering issues by an unassigned User or Milestone
+  def unassigned_filter
+    # Milestone uses :title, Issue uses :name
+    OpenStruct.new(id: 0, title: 'Unspecified', name: 'Unassigned')
+  end
 end