issue: BooleanField Inline Edit Value

This addresses an issue where after setting a checkbox value via Inline Edit
it shows the value as `0` or `1` instead of `Yes` or `No`. You have to
refresh the page in order for the value to appear correctly. This is due to
the raw value being returned instead of it's string equivalent. This adds a
case in `TicketsAjaxAPI::editField()` for `BooleanField` that converts the
raw value to the string value with `toString()`.

include/ajax.tickets.php

@@ -641,6 +641,9 @@ function editField($tid, $fid) {
                         if (strlen($clean) > 200)
                              $clean = Format::truncate($clean, 200);
                         break;
+                    case $field instanceof BooleanField:
+                        $clean = $field->toString($field->getClean());
+                        break;
                     default:
                         $clean =  $field->getClean();
                         $clean = is_array($clean) ? implode($clean, ',') :