Merge branch 'fix_subscription' into 'master'

Fix public issue

See merge request !1717

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

@@ -27,6 +27,7 @@
       = hidden_field_tag :issue_context
       = f.submit class: 'btn'
 
+  - if current_user
     %div.prepend-top-20.clearfix
       .issuable-context-title
         %label

app/views/projects/merge_requests/show/_context.html.haml

@@ -29,6 +29,7 @@
         = hidden_field_tag :merge_request_context
         = f.submit class: 'btn'
 
+  - if current_user
     %div.prepend-top-20.clearfix
       .issuable-context-title
         %label