custom fields on devices and ports in the web from config (#945)

* custom device field web display and edit

* make display work; relies on T::T calling dict slot or method with same syntax

* add storing port custom fields

* use resultset method instead, use cf_ prefix

* update Pg min ver for jsonb

* allow override of position and default for port custom fields

* support hidden for custom fields

* update description of Objects API class

* allow left and mid position for custom fields

* add custom fields in csv

* change port control sidebar label

* fix default missing bug on backend jobs

share/views/ajax/device/details.tt

@@ -79,14 +79,25 @@
     <tr>
       <td>
           [% config.label | html_entity %]
-      </td>
-      <td>
-          [% TRY %]
-          [% INCLUDE "plugin/${config.name}/device_details.tt" %]
-          [% CATCH %]
-          <!-- dummy content required by Template Toolkit TRY -->
+          [% IF config.editable AND user_can_port_control %]
+          <i class="icon-edit nd_edit-icon nd_device-details-edit"></i>
           [% END %]
       </td>
+      [% TRY %]
+        <td>
+        [% INCLUDE "plugin/${config.name}/device_details.tt" %]
+        </td>
+      [% CATCH %]
+        [% CLEAR %]
+        [% IF config.editable AND user_can_port_control %]
+          <td class="nd_editable-cell" contenteditable="true"
+            data-field="[% config.field | html_entity %]" data-for-device="[% d.ip | html_entity %]">
+        [% ELSE %]
+          <td>
+        [% END %]
+          [% d.${config.field} | html_entity %]
+          </td>
+      [% END %]
     </tr>
     [% END %]
     [% END %]