flags/appeals: replace is_resolved flag with statuses.

Replace references to the `is_resolved` field with the `status` field.
Post flags were marked as resolved when a post was approved (but not
when the post was deleted because it went unapproved). The status field
supercedes the resolved field.

app/views/post_flags/_reasons.html.erb

@@ -8,10 +8,6 @@
       <% end %>
 
       - <%= time_ago_in_words_tagged(flag.created_at) %>
-
-      <% if flag.is_resolved? %>
-        <span class="resolved">RESOLVED</span>
-      <% end %>
     </li>
   <% end %>
 </ul>

app/views/post_flags/_search.html.erb

@@ -5,7 +5,7 @@
   <% if policy(PostFlag).can_search_flagger? %>
     <%= f.input :creator_name, label: "Creator", input_html: { value: params[:search][:creator_name], data: { autocomplete: "user" } } %>
   <% end %>
-  <%= f.input :is_resolved, label: "Resolved?", collection: [["Yes", true], ["No", false]], include_blank: true, selected: params[:search][:is_resolved] %>
   <%= f.input :category, label: "Category", collection: ["normal", "unapproved", "rejected", "deleted"], include_blank: true, selected: params[:search][:category] %>
+  <%= f.input :status, collection: PostFlag.statuses, include_blank: true, selected: params[:search][:status] %>
   <%= f.submit "Search" %>
 <% end %>

app/views/post_flags/index.html.erb

@@ -19,8 +19,8 @@
       <% t.column "Category", width: "1%" do |post_flag| %>
         <%= link_to post_flag.category.to_s, post_flags_path(search: params[:search].merge(category: post_flag.category)) %>
       <% end %>
-      <% t.column "Resolved?", width: "1%" do |post_flag| %>
-        <%= link_to post_flag.is_resolved?.to_s, post_flags_path(search: params[:search].merge(is_resolved: post_flag.is_resolved?)) %>
+      <% t.column "Status", width: "5%" do |post_flag| %>
+        <%= link_to post_flag.status, post_flags_path(search: { status: post_flag.status }) %>
       <% end %>
       <% t.column "Uploaded", width: "15%" do |post_flag| %>
         <%= compact_time post_flag.post.created_at %>