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) {

app/views/customers/_search.html.erb

@@ -2,5 +2,7 @@
     <%= text_field_tag :search, params[:search], class: "customer-name", placeholder: t(:label_search_customers), autocomplete: "off", data: { autocomplete_url: "/customers/autocomplete" } %>
     <%= submit_tag t(:label_search) %>
 <% end %>
-<%= button_to t(:label_new_customer), new_customer_path, method: :get%>
+<% if User.current.allowed_to?(:add_customers, nil, global: true) %>
+    <%= button_to t(:label_new_customer), new_customer_path, method: :get%>
+<% end %>
 <%= button_to(t(:label_sync), qbo_sync_path, method: :get) if User.current.admin?%>