Merge branch 'dz-remove-group-icon' into 'master'

Remove icon from Contribution Analytics navigation
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

cc @vsizov @jschatz1 

See merge request !461

app/views/layouts/nav/_group.html.haml

@@ -33,6 +33,5 @@
           Members
     = nav_link(controller: [:stats]) do
       = link_to group_analytics_path(@group), title: 'Contribution Analytics', data: {placement: 'right'} do
-        = icon('bar-chart fw')
         %span
           Contribution Analytics