new folder structure for keys
all keys are now in files_encryption/key/path_to_file/filename/
share keys are named: user.shareKey
file key is named: fileKey
harmonize copyright notice
change private/public key names for consistency reasons
remove border from user menu, adjust to apps menu
upgrade to new folder structure
delete old keys if file was moved to a different mount point
adding @ sign between email address and domain name to make the syntax clearer
small fixes
add missing public interface for iOS client app id
Add route for download of versions

Otherwise on master it was not possible anymore to download older versions.

Fixes itself.
add proper description what database is supported by CE and EE
Merge pull request #12565 from owncloud/config-sample-databases

add proper description what database is supported by CE and EE
Merge pull request #12563 from owncloud/usermenu-remove-border

remove border from user menu, adjust to apps menu
Stop flooding the log, when previews are disabled
Merge pull request #12556 from owncloud/add-route-for-versions

Add route for download of versions
Merge pull request #12553 from owncloud/default-iosid

add missing public interface for iOS client app id
Merge pull request #12572 from owncloud/issue/12571-disabled-preview-logflood

Stop flooding the log, when previews are disabled
Merge pull request #12552 from szlwzl/master

adding @ sign between email address and domain name to make syntax clearer
Merge pull request #12382 from owncloud/enc_reorganize_folders2

[encryption] reorganize folder structure (second try to make Jenkins happy)
Fix namespace of files_encryption classes and autoload them