Add resolved search for appeals

fixes #1258

app/models/post_appeal.rb

@@ -10,6 +10,14 @@ class PostAppeal < ActiveRecord::Base
   validates_uniqueness_of :creator_id, :scope => :post_id, :message => "have already appealed this post"
 
   module SearchMethods
+    def resolved
+      joins(:post).where("posts.is_deleted = false and posts.is_flagged = false")
+    end
+
+    def unresolved
+      joins(:post).where("posts.is_deleted = true or posts.is_flagged = true")
+    end
+
     def for_user(user_id)
       where("creator_id = ?", user_id)
     end
@@ -34,6 +42,12 @@ class PostAppeal < ActiveRecord::Base
         q = q.where("post_id = ?", params[:post_id].to_i)
       end
 
+      if params[:is_resolved] == "true"
+        q = q.resolved
+      elsif params[:is_resolved] == "false"
+        q = q.unresolved
+      end
+
       q
     end
   end