fix(tabs): re-expose TabsetController

- Re-expose `TabsetController` with deprecation notice

Closes #4530

Author: wesleycho

src/tabs/tabs.js

@@ -296,6 +296,16 @@ angular.module('ui.bootstrap.tabs')
 
   .value('$tabsSuppressWarning', false)
 
+  .controller('TabsetController', ['$scope', '$controller', '$log', '$tabsSuppressWarning', function($scope, $controller, $log, $tabsSuppressWarning) {
+    if (!$tabsSuppressWarning) {
+      $log.warn('TabsetController is now deprecated. Use UibTabsetController instead.');
+    }
+
+    angular.extend(this, $controller('UibTabsetController', {
+      $scope: $scope
+    }));
+  }])
+
   .directive('tabset', ['$log', '$tabsSuppressWarning', function($log, $tabsSuppressWarning) {
     return {
       restrict: 'EA',
@@ -304,7 +314,7 @@ angular.module('ui.bootstrap.tabs')
       scope: {
         type: '@'
       },
-      controller: 'UibTabsetController',
+      controller: 'TabsetController',
       templateUrl: 'template/tabs/tabset.html',
       link: function(scope, element, attrs) {
 

src/tabs/test/tabs.spec.js

@@ -913,10 +913,11 @@ describe('tab deprecation', function() {
     $compile(element)($rootScope);
     $rootScope.$digest();
 
-    expect($log.warn.calls.count()).toBe(4);
-    expect($log.warn.calls.argsFor(0)).toEqual(['tab-heading-transclude is now deprecated. Use uib-tab-heading-transclude instead.']);
-    expect($log.warn.calls.argsFor(1)).toEqual(['tab is now deprecated. Use uib-tab instead.']);
-    expect($log.warn.calls.argsFor(2)).toEqual(['tabset is now deprecated. Use uib-tabset instead.']);
-    expect($log.warn.calls.argsFor(3)).toEqual(['tab-content-transclude is now deprecated. Use uib-tab-content-transclude instead.']);
+    expect($log.warn.calls.count()).toBe(5);
+    expect($log.warn.calls.argsFor(0)).toEqual(['TabsetController is now deprecated. Use UibTabsetController instead.']);
+    expect($log.warn.calls.argsFor(1)).toEqual(['tab-heading-transclude is now deprecated. Use uib-tab-heading-transclude instead.']);
+    expect($log.warn.calls.argsFor(2)).toEqual(['tab is now deprecated. Use uib-tab instead.']);
+    expect($log.warn.calls.argsFor(3)).toEqual(['tabset is now deprecated. Use uib-tabset instead.']);
+    expect($log.warn.calls.argsFor(4)).toEqual(['tab-content-transclude is now deprecated. Use uib-tab-content-transclude instead.']);
   }));
 });