app/views/sponsors/_manage_sponsor.html.erb
<div class="manage-sponsor">
<%= link_to event_sponsor_path(@event.id, sponsor.id), method: :delete, class: "delete-sponsor-icon", remote: true, data: { confirm: "Are you sure?" } do %>
<i class="material-icons">delete</i>
<% end %>
<%= link_to edit_event_sponsor_path(@event.id, sponsor.id), remote: true, class: "edit-sponsor-icon" do %>
<i class="material-icons" id="addSponsor">mode_edit</i>
<% end %>
</div>