If tagging mode is activate, do not check values

Motivation: Fix angular-ui#540
The tagging mode is designed to allow new values to be added to the model.
It does not make sense to check those values against the list of choices when going from model --> view.

Author: Asimov4

dist/select.js

@@ -1004,6 +1004,7 @@
                 return false;
               };
               if (!inputValue) return resultMultiple; //If ngModel was undefined
+              if ($select.tagging.isActivated) return inputValue;
               for (var k = inputValue.length - 1; k >= 0; k--) {
                 if (!checkFnMultiple($select.selected, inputValue[k])){
                   checkFnMultiple(data, inputValue[k]);
@@ -1381,4 +1382,4 @@ $templateCache.put("select2/select-multiple.tpl.html","<div class=\"ui-select-co
 $templateCache.put("select2/select.tpl.html","<div class=\"ui-select-container select2 select2-container\" ng-class=\"{\'select2-container-active select2-dropdown-open open\': $select.open,\n                \'select2-container-disabled\': $select.disabled,\n                \'select2-container-active\': $select.focus,\n                \'select2-allowclear\': $select.allowClear && !$select.isEmpty()}\"><div class=\"ui-select-match\"></div><div class=\"select2-drop select2-with-searchbox select2-drop-active\" ng-class=\"{\'select2-display-none\': !$select.open}\"><div class=\"select2-search\" ng-show=\"$select.searchEnabled\"><input type=\"text\" autocomplete=\"off\" autocorrect=\"off\" autocapitalize=\"off\" spellcheck=\"false\" role=\"combobox\" aria-expanded=\"true\" aria-owns=\"ui-select-choices-{{ $select.generatedId }}\" aria-label=\"{{ $select.baseTitle }}\" aria-activedescendant=\"ui-select-choices-row-{{ $select.generatedId }}-{{ $select.activeIndex }}\" class=\"ui-select-search select2-input\" ng-model=\"$select.search\"></div><div class=\"ui-select-choices\"></div></div></div>");
 $templateCache.put("selectize/choices.tpl.html","<div ng-show=\"$select.open\" class=\"ui-select-choices selectize-dropdown single\"><div class=\"ui-select-choices-content selectize-dropdown-content\"><div class=\"ui-select-choices-group optgroup\" role=\"listbox\"><div ng-show=\"$select.isGrouped\" class=\"ui-select-choices-group-label optgroup-header\" ng-bind=\"$group.name\"></div><div role=\"option\" class=\"ui-select-choices-row\" ng-class=\"{active: $select.isActive(this), disabled: $select.isDisabled(this)}\"><div class=\"option ui-select-choices-row-inner\" data-selectable=\"\"></div></div></div></div></div>");
 $templateCache.put("selectize/match.tpl.html","<div ng-hide=\"($select.open || $select.isEmpty())\" class=\"ui-select-match\" ng-transclude=\"\"></div>");
-$templateCache.put("selectize/select.tpl.html","<div class=\"ui-select-container selectize-control single\" ng-class=\"{\'open\': $select.open}\"><div class=\"selectize-input\" ng-class=\"{\'focus\': $select.open, \'disabled\': $select.disabled, \'selectize-focus\' : $select.focus}\" ng-click=\"$select.activate()\"><div class=\"ui-select-match\"></div><input type=\"text\" autocomplete=\"off\" tabindex=\"-1\" class=\"ui-select-search ui-select-toggle\" ng-click=\"$select.toggle($event)\" placeholder=\"{{$select.placeholder}}\" ng-model=\"$select.search\" ng-hide=\"!$select.searchEnabled || ($select.selected && !$select.open)\" ng-disabled=\"$select.disabled\" aria-label=\"{{ $select.baseTitle }}\"></div><div class=\"ui-select-choices\"></div></div>");}]);
+$templateCache.put("selectize/select.tpl.html","<div class=\"ui-select-container selectize-control single\" ng-class=\"{\'open\': $select.open}\"><div class=\"selectize-input\" ng-class=\"{\'focus\': $select.open, \'disabled\': $select.disabled, \'selectize-focus\' : $select.focus}\" ng-click=\"$select.activate()\"><div class=\"ui-select-match\"></div><input type=\"text\" autocomplete=\"off\" tabindex=\"-1\" class=\"ui-select-search ui-select-toggle\" ng-click=\"$select.toggle($event)\" placeholder=\"{{$select.placeholder}}\" ng-model=\"$select.search\" ng-hide=\"!$select.searchEnabled || ($select.selected && !$select.open)\" ng-disabled=\"$select.disabled\" aria-label=\"{{ $select.baseTitle }}\"></div><div class=\"ui-select-choices\"></div></div>");}]);