adding size() to the file cache
returning the number of stored bytes in store() and adding cleanup() method
adding detection of aborted uploads
Merge branch 'master' into fixing-4546-master

Conflicts:
	lib/connector/sabre/directory.php
Merge branch 'master' into fixing-4546-master

Conflicts:
	lib/connector/sabre/directory.php
Merge branch 'master' into fixing-4546-master

Conflicts:
	lib/private/connector/sabre/directory.php
moving createFileChunked() to OC_Connector_Sabre_File
add "received_from" and "received_from_displayname" field in case of a reshared file to the output
fix api tests
Merge branch 'master' into fixing-4546-master

Conflicts:
	lib/private/connector/sabre/file.php
Added missing "grid" class on external storage's table
Merge pull request #5323 from owncloud/files-external-missinggridstyle

Added missing "grid" class on external storage's table
Merge pull request #4867 from owncloud/fixing-4546-master

Adding detection of aborted uploads for chunked uploads
Removed extra bkg color on file actions when row is selected/hovered on
check if we are writing to user/files, otherwise skip encryption
Merge pull request #5330 from owncloud/files-removedfileactionsbkg

Removed extra bkg color on file actions when row is selected/hovered on
streamCopy() should return proper structure.

Callers of streamCopy() expect an array to be returned containing count and result.
Fix logout link HTML.

<a id="logout" href=/projects/owncloud/core/index.php?logout=true>
Merge pull request #5340 from owncloud/fixing-5251-master

streamCopy() should return proper structure.
Merge pull request #5341 from owncloud/fix-logout-link-html

Fix logout link HTML.