add role checking to controllers

backend/views/user/index.php

@@ -16,9 +16,12 @@ $this->params['breadcrumbs'][] = $this->title;
     <h1><?= Html::encode($this->title) ?></h1>
     <?php  echo $this->render('_search', ['model' => $searchModel]); ?>
 
+    <?php if ( RoleDefinition::isAdmin()){ ?>
     <p>
         <?= Html::a(Yii::t('app', 'Új felhasználó'), ['create'], ['class' => 'btn btn-success']) ?>
     </p>
+    
+    <?php } ?>
 
     <?= GridView::widget([
         'dataProvider' => $dataProvider,
@@ -39,7 +42,7 @@ $this->params['breadcrumbs'][] = $this->title;
     		]	,
         		
             ['class' => 'yii\grid\ActionColumn',
-             'template' => '{view} {update}'
+             'template' => RoleDefinition::getRoleTemplate([ 'admin' => '{view} {update}', 'employee' => '{view}' ] )
     ],
         ],
     ]); ?>