make sure that we set the expire date if a date is adefault date is set
add unit test
only if the environment variable RUN_OBJECTSTORE_TESTS is set the object store unit test will be executed
also use link icon for the folders ..
Merge pull request #10041 from owncloud/design-link-folder-icon

also use link icon for the folders ..
Merge pull request #10032 from owncloud/kill-swift-tests

only if the environment variable RUN_OBJECTSTORE_TESTS is set the object...
Merge pull request #9970 from owncloud/sharing_set_expire_date

Sharing set expire date
extract transparency fix from #8050