Whitespace cleanup

apps/files/css/files.css

apps/files/js/fileactions.js

apps/files/js/files.js

apps/files_external/lib/amazons3.php

apps/files_external/lib/config.php

apps/files_external/templates/settings.php

apps/files_sharing/js/share.js

apps/files_sharing/public.php

lib/MDB2/Driver/sqlite3.php

lib/api.php

lib/app.php

lib/backgroundjob.php

lib/connector/sabre/node.php

lib/filecache.php

lib/fileproxy/quota.php

lib/files.php

lib/filesystem.php

lib/filesystemview.php

lib/helper.php

lib/image.php