Add pencil icon to edit group settings

Move icons to upper-right corner of group page

Closes #6038

app/views/groups/show.html.haml

@@ -6,6 +6,11 @@
     = auto_discovery_link_tag(:atom, group_url(@group, format: :atom, private_token: current_user.private_token), title: "#{@group.name} activity")
 
 .cover-block
+  .cover-controls
+    - if @group && can?(current_user, :admin_group, @group)
+      = link_to icon('pencil'), edit_group_path(@group), class: 'btn'
+    = link_to icon('rss'), group_path(@group, { format: :atom, private_token: current_user.private_token }), title: "Feed", class: 'btn rss-btn'
+
   .avatar-holder
     = link_to group_icon(@group), target: '_blank' do
       = image_tag group_icon(@group), class: "avatar group-avatar s90"
@@ -34,9 +39,6 @@
       .gray-content-block.activity-filter-block
         - if current_user
           = render "events/event_last_push", event: @last_push
-          .pull-right
-            = link_to group_path(@group, { format: :atom, private_token: current_user.private_token }), title: "Feed", class: 'btn rss-btn' do
-              %i.fa.fa-rss
 
           = render 'shared/event_filter'