hide IP rules & IPs when ip pools aren't available

app/views/organizations/_nav.html.haml

@@ -4,7 +4,8 @@
       %li.navBar__item= link_to "Mail Servers", organization_root_path(organization), :class => ['navBar__link', active_nav == :servers ? 'is-active' : '']
       %li.navBar__item= link_to "Domains", organization_domains_path(organization), :class => ['navBar__link', active_nav == :domains ? 'is-active' : '']
       %li.navBar__item= link_to "Settings", organization_settings_path(organization), :class => ['navBar__link', active_nav == :settings ? 'is-active' : '']
-      %li.navBar__item= link_to "IPs", organization_ip_pools_path(organization), :class => ['navBar__link', active_nav == :ips ? 'is-active' : '']
+      - if Postal.ip_pools?
+        %li.navBar__item= link_to "IPs", organization_ip_pools_path(organization), :class => ['navBar__link', active_nav == :ips ? 'is-active' : '']
       %li.navBar__item= link_to "Users", organization_users_path(organization), :class => ['navBar__link', active_nav == :users ? 'is-active' : '']
       - if organization.owner?(current_user)
         %li.navBar__item= link_to "Delete Organization", organization_delete_path(organization), :class => ['navBar__link', active_nav == :delete ? 'is-active' : '']

app/views/servers/_settings_header.html.haml

@@ -4,7 +4,8 @@
     %li.navBar__item= link_to "Spam", [:spam, organization, @server], :class => ['navBar__link', active_nav == :spam ? 'is-active' : '']
     %li.navBar__item= link_to "Retention", [:retention, organization, @server], :class => ['navBar__link', active_nav == :retention ? 'is-active' : '']
     %li.navBar__item= link_to "Send Limit", [:limits, organization, @server], :class => ['navBar__link', active_nav == :limits ? 'is-active' : '']
-    %li.navBar__item= link_to "IP Rules", [organization, @server, :ip_pool_rules], :class => ['navBar__link', active_nav == :ip_pool_rules ? 'is-active' : '']
+    - if Postal.ip_pools?
+      %li.navBar__item= link_to "IP Rules", [organization, @server, :ip_pool_rules], :class => ['navBar__link', active_nav == :ip_pool_rules ? 'is-active' : '']
     - if current_user.admin?
       %li.navBar__item= link_to "Admin", [:admin, organization, @server], :class => ['navBar__link', active_nav == :admin ? 'is-active' : '']
     - if organization.admin?(current_user)