DAV: Use fileinfo_cache for ETag

send mail notification if a file was shared to a user/group

Conflicts:
	apps/files/index.php
	apps/files/templates/index.php

Merge branch 'sharing_mail_notification_master' of github.com:owncloud/core into sharing_mail_notification_master

Conflicts:
	core/ajax/share.php

make it possible to prepopulate a new user home with a skeleton

LDAP modularization and tests

Encryption improved error messages

let user repeat the recovery key password to prevent typos

The message for invalid private key was too long and didn't fit in the
notification box. This fix reduces the message to fit properly by
removing the extra information.

we don't know \OCA\Encryption\Session if the encryption app is not enabled, so we have to set the status manually

Controls bar height

Added backup for config.php in autotest.sh script

Hide defaultavatar in #header and don't darken proper avatars in #header

The script now checks for config.php existance and backs it up before
running the test, then restores it back at the end. This avoids the
situation where devs lose their manually edited config if they forgot to
back it up before running the unit tests.

The script now also checks for config.php permissions beforehand to
avoid displaying an annoying HTML page output in the console with an
error message.

Conflicts:
	core/css/share.css

only perform files upgrade in case there are actually entries in the old...

File Selected on Click instead of download.

Whitespace fix for share.css

Design finetune