added >> to 'add research note' button (#2195)

* Add &raquo to line 7 for button

* Attempt to fix failing tests

* Fix test failures

app/views/sidebar/_related.html.erb

@@ -4,7 +4,7 @@
 
   <div id="sidebar" class="hidden-xs hidden-sm">
 
-  <a style="margin-bottom:6px;white-space: normal;" rel="tooltip" title="<%= t('sidebar._related.share_your_work') %>" data-placement="bottom" href="/post" class="btn btn-primary btn-lg btn-block hidden-sm"><i class="fa fa-pencil fa fa-white"></i> <%= t('sidebar._related.write_research_note') %></a>
+  <a style="margin-bottom:6px;white-space: normal;" rel="tooltip" title="<%= t('sidebar._related.share_your_work') %>" data-placement="bottom" href="/post" class="btn btn-primary btn-lg btn-block hidden-sm write-research-note"><i class="fa fa-pencil fa fa-white"></i> <%= t('sidebar._related.write_research_note') %> &raquo;</a>
   <a style="white-space: normal;" rel="tooltip" title="Post <% if @tagnames %>about <%= (@tagnames.uniq.delete_if{|x| x.match(":") }).join(',') %><% else %>research<% end %>" data-placement="bottom" href="/post<%= '?template=question&tags=question:general,'+(@tagnames.uniq.delete_if{|x| x.match(":") }).join(',') if @tagnames %><% if params[:controller] == 'notes' && params[:action] == 'show' %>,response:<%= @node.id %><% end %>" class="btn btn-primary btn-lg btn-block"><i class="fa fa-pencil fa fa-white"></i> <%= t('sidebar._related.ask_a_question') %> &raquo;</a>
 
   <% cache('related_sidebar-feature', skip_digest: true) do %>

test/integration/I18n_test.rb

@@ -348,7 +348,7 @@ class I18nTest < ActionDispatch::IntegrationTest
       follow_redirect!
 
       get '/wiki/' + nodes(:organizers).title.parameterize
-      assert_select 'a', I18n.t('sidebar._related.write_research_note')
+      assert_select 'a.write-research-note', "#{I18n.t('sidebar._related.write_research_note')} &raquo;"
     end
   end