Merge branch 'no-weight-in-form' into 'master'

Don't show weight in form since it looks silly.

Remove the icon from the form

As discussed in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/88#note_3027598

See merge request !100

app/views/shared/issuable/_form.html.haml

@@ -57,7 +57,6 @@
   - if issuable.respond_to?(:weight)
     .form-group
       = f.label :label_ids, class: 'control-label' do
-        = icon('magnet')
         Weight
       .col-sm-10
         = f.select :weight, projects_weight_options(issuable.weight), { include_blank: true },