Implement global permissions for customer actions and update views to check permissions before rendering buttons

app/views/customers/_actions.html.erb

@@ -14,7 +14,9 @@
 
 <%= call_hook :customer_actions_bottom, { customer: @customer } %>
 
-<%= button_to t(:label_edit_customer), edit_customer_path(@customer), method: :get%> 
+<% if User.current.allowed_to?(:edit_customers, nil, global: true) %>
+  <%= button_to t(:label_edit_customer), edit_customer_path(@customer), method: :get%> 
+<% end %>
 
 <script>
   function handleSingleSelect(event, className) {