Display other submissions by the same artist

Fixes #87

app/controllers/grant_submissions_controller.rb

@@ -39,6 +39,7 @@ def update
   end
 
   def show
+    @other_submissions = GrantSubmission.where(artist_id: @grant_submission.artist_id)
   end
 
   def index

app/models/grant_submission.rb

@@ -50,6 +50,10 @@ def has_answers?
     answers.present?
   end
 
+  def has_other_submissions?
+    GrantSubmission.where(artist_id: artist_id).count > 1
+  end
+
   def max_voters
     3
   end

app/views/grant_submissions/show.html.erb

@@ -37,6 +37,24 @@
       </div>
     </div>
   </div>
+  <% if can? :edit_questions, GrantSubmission or can? :vote, GrantSubmission %>
+  <div class="col-md-6">
+    <div class="panel panel-default">
+      <div class="panel-heading">
+        <h3 class="panel-title">Other Submissions by This Artist</h3>
+      </div>
+      <div class="panel-body">
+        <dl>
+          <% @other_submissions.each do |s| %>
+            <% if s.name != @grant_submission.name %>
+              <dd><%= s.name %> &mdash; <%= Grant.find(s.grant_id).name %></dd>
+            <% end %>
+          <% end %>
+        </dl>
+      </div>
+    </div>
+  </div>
+  <% end %>
 </div>
 
 <div class="row">