Move issues sort dropdown to shared partial

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/projects/issues/_issues.html.haml

@@ -78,28 +78,7 @@
                   %strong= milestone.title
                   %small.light= milestone.expires_at
 
-        .dropdown.inline.prepend-left-10
-          %a.dropdown-toggle.btn.btn-small{href: '#', "data-toggle" => "dropdown"}
-            %span.light sort:
-            - if @sort.present?
-              = @sort
-            - else
-              Newest
-            %b.caret
-          %ul.dropdown-menu
-            %li
-              = link_to project_filter_path(sort: 'newest') do
-                Newest
-              = link_to project_filter_path(sort: 'oldest') do
-                Oldest
-              = link_to project_filter_path(sort: 'recently_updated') do
-                Recently updated
-              = link_to project_filter_path(sort: 'last_updated') do
-                Last updated
-              = link_to project_filter_path(sort: 'milestone_due_soon') do
-                Milestone due soon
-              = link_to project_filter_path(sort: 'milestone_due_later') do
-                Milestone due later
+        = render 'shared/sort_dropdown'
 
 
   %ul.well-list.issues-list

app/views/shared/_sort_dropdown.html.haml

+.dropdown.inline.prepend-left-10
+  %a.dropdown-toggle.btn.btn-small{href: '#', "data-toggle" => "dropdown"}
+    %span.light sort:
+    - if @sort.present?
+      = @sort
+    - else
+      Newest
+    %b.caret
+  %ul.dropdown-menu
+    %li
+      = link_to project_filter_path(sort: 'newest') do
+        Newest
+      = link_to project_filter_path(sort: 'oldest') do
+        Oldest
+      = link_to project_filter_path(sort: 'recently_updated') do
+        Recently updated
+      = link_to project_filter_path(sort: 'last_updated') do
+        Last updated
+      = link_to project_filter_path(sort: 'milestone_due_soon') do
+        Milestone due soon
+      = link_to project_filter_path(sort: 'milestone_due_later') do
+        Milestone due later