support aes 256
update existing unit tests
add unit test for aes256/aes128
Load authentication backends before tryBasicAuth
don't clean up the test environment if a data provider was finished
Merge pull request #9754 from owncloud/enc_support_aes_256

[encryption] support aes 256
Merge pull request #10387 from owncloud/quick_fix_for_unit_tests

don't clean up the test environment if a data provider was finished
Close file handle if exception occurs in image class

ref #10392
Close open file handles in files library

ref #10392
Kill filesync.php in files/appinfo

* ref comment: https://github.com/owncloud/core/issues/10392#issuecomment-52050567
Merge pull request #10323 from gekmihesg/master

Load authentication backends before tryBasicAuth
Cast file id's to int so we can compare them properly
Merge pull request #10403 from owncloud/getid-cast-int

Cast file id's to int so we can compare them properly
Merge pull request #10394 from owncloud/close-filehandle-lib-image

Close file handle if exception occurs in image class
Merge pull request #10396 from owncloud/kill-filesync

Kill filesync.php in files/appinfo
[tx-robot] updated from transifex
Merge pull request #10395 from owncloud/close-filehandle-lib-files

Close open file handles in files library