Also test enabling of the Antivirus App for files

Since there is no calendar release for 15 yet we should use an app that
we can quickly release for 15 as well.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

tests/acceptance/features/apps.feature

@@ -76,15 +76,15 @@ Feature: apps
     And I am logged in as the admin
     And I open the Apps management
     And I open the "Tools" section
-    When I click on the "Antivirus App for files" app
+    When I click on the "Antivirus for files" app
     Then I see that the app details are shown
 
   Scenario: Install an app from the app store
     Given I act as Jane
     And I am logged in as the admin
     And I open the Apps management
-    And I open the "Office & text" section
-    And I click on the "Calendar" app
+    And I open the "Tools" section
+    And I click on the "Antivirus for files" app
     And I see that the app details are shown
-    Then I download and enable the "Calendar" app
-    And I see that the "Calendar" app has been enabled
+    Then I download and enable the "Antivirus for files" app
+    And I see that the "Antivirus for files" app has been enabled