Add categories sanitizer to reverse

sanitiser/reverse.js

@@ -12,6 +12,7 @@ var sanitizeAll = require('../sanitiser/sanitizeAll'),
       private: require('../sanitiser/_flag_bool')('private', false),
       geo_reverse: require('../sanitiser/_geo_reverse'),
       boundary_country: require('../sanitiser/_boundary_country'),
+      categories: require('../sanitiser/_categories')
     };
 
 var sanitize = function(req, cb) { sanitizeAll(req, sanitizers, cb); };

test/unit/sanitiser/reverse.js

@@ -37,7 +37,7 @@ module.exports.tests.interface = function(test, common) {
 module.exports.tests.sanitisers = function(test, common) {
   test('check sanitiser list', function (t) {
     var expected = ['quattroshapes_deprecation', 'singleScalarParameters', 'layers',
-      'sources', 'sources_and_layers', 'size', 'private', 'geo_reverse', 'boundary_country'];
+      'sources', 'sources_and_layers', 'size', 'private', 'geo_reverse', 'boundary_country', 'categories'];
     t.deepEqual(Object.keys(reverse.sanitiser_list), expected);
     t.end();
   });