Merge pull request #3015 from hypothesis/b9PFMDM7-add-activate-button-to-admin-users-page

Enable admins to activate users

h/static/styles/admin.scss

@@ -10,3 +10,7 @@ body {
   table-layout: auto;
   width: auto;
 }
+
+.users-activate-form {
+  display: inline;
+}