Resolve "Issue categories are not unique"

Closes #44

aleksis/apps/hjelp/templates/hjelp/issue_report.html

@@ -98,11 +98,11 @@
             $(id).disabled = true;
         }
         $.fn.setNextProperties = function (field_id, next_field_id, next_field_name) {
-            var category = $('#' + field_id).find(':selected').text();
+            var id = $('#' + field_id).find(':selected').val();
             $.ajax({
                 url: '{% url "issues_get_next_properties" %}',
                 data: {
-                    'category': category
+                    'id': id
                 },
                 dataType: 'json',
                 success: function (data) {