Make some apps compatible

apps/calendar/index.php

apps/contacts/ajax/addproperty.php

apps/contacts/templates/part.contacts.php

apps/files/ajax/list.php

apps/files/index.php

apps/gallery/lib/tiles.php

apps/user_ldap/group_ldap.php

apps/user_ldap/settings.php

apps/user_ldap/templates/settings.php

core/templates/login.php

index.php

lib/template.php

lib/util.php

settings/admin.php

settings/apps.php

settings/templates/admin.php

settings/templates/help.php