Beside some small improvements and bug fixes this will probably the final state for OC8.

To test this you need to set up two ownCloud instances. Let's say:

URL: myPC/firstOwnCloud user: user1
URL: myPC/secondOwnCloud user: user2
Now user1 can share a file with user2 by entering the username and the URL to the second ownCloud to the share-drop-down, in this case "user2@myPC/secondOwnCloud".

The next time user2 login he will get a notification that he received a server-to-server share with the option to accept/decline it. If he accept it the share will be mounted. In both cases a event will be send back to user1 and add a notification to the activity stream that the share was accepted/declined.

If user1 decides to unshare the file again from user2 the share will automatically be removed from the second ownCloud server and user2 will see a notification in his activity stream that user1@myPC/firstOwnCloud has unshared the file/folder from him.

Add ultra-slim hack for incognito mode

[jenkins only] introduce names for user backends - IUserBackend

Only populate tags in main file list

HHVM: In APC cache clear, only request the cache key in APCIterator.

Return UID instead of login name

* LDAP with multiple servers also proved backendName

Update 3rdparty submodule to restore PEAR5.php

Accessibility: Keyboard navigation feedback

Mail address of users is now changable in the user management

Wording fixes for sharing dialog

Returns tags through WebDAV

The default value of the $format parameter of the APCIterator constructur is
APC_ITER_ALL which instructs the iterator to provide all available information
on cache values being iterated over. Only the key value is necessary for
matching and deletion via apc_delete(), though.

This prevents a "Format values FILENAME, DEVICE, INODE, MD5, NUM_HITS, MTIME,
CTIME, DTIME, ATIME, REFCOUNT not supported yet." notice on HHVM.

Wave accessibility compliance

Add Redis cache implementation, prefer over memcached, tests & config sample doc

Add a isLoggedIn method to the usersession and deprecate the isLoggedIn ...

Add mount specific options

make sure styles and scripts are only loaded once

first step to drop \OCP\Config:: in favour of IConfig

* introduced new route settings/users/{id}/mailAddress
* kept old responses
* better error messages
* dropped lostpassword.php from settings/ajax
* cleaned up the UserList.add() and hand in user object instead of
  each attribute as another parameter
* check for change permission of mail address
* proper response messages

Send mail for new users

show spinner on file upload in IE8, 9

HHVM: Do not call filesize(null), this function expects a string.

filesize(null) yields an int on HHVM and thus exif_imagetype(null) is called.

Fix extra quotes in custom tags in header