Fix remove report button

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

CHANGELOG

@@ -12,6 +12,7 @@ v 8.0.0 (unreleased)
   - Search for comments should be case insensetive
   - Create cross-reference for closing references on commits pushed to non-default branches (Maël Valais)
   - Ability to search milestones
+  - Improve abuse reports management from admin area
 
 v 7.14.1 (unreleased)
   - Only include base URL in OmniAuth full_host parameter (Stan Hu)

app/views/admin/abuse_reports/_abuse_report.html.haml

@@ -22,5 +22,5 @@
 
   %td
     - if user
-      = link_to 'Block user', block_admin_user_path(user), data: {confirm: 'USER WILL BE BLOCKED! Are you sure?'}, method: :put, class: "btn btn-xs btn-warning"
-    = link_to 'Remove report', [:admin, abuse_report], method: :delete, class: "btn btn-xs btn-close"
+      = link_to 'Block user', block_admin_user_path(user), data: {confirm: 'USER WILL BE BLOCKED! Are you sure?'}, method: :put, class: "btn btn-xs"
+    = link_to 'Remove report', [:admin, abuse_report], remote: true, method: :delete, class: "btn btn-xs btn-close js-remove-tr"