make sure class file is loaded once
fixing windows max depth test
implement localizations based on punic
adding unit tests for en_GB and en-GB - just to verify
fixing expected values for formatDate() unit tests
Remove \OC\DB\ConnectionWrapper, have \OC\DB\Connection implement \OCP\IDBConnection directly instead
Extend \OCP\IDBConnection to cover more use cases
Remove implicit prepared statement cache and get the connection from the server container in \OC_DB
Move creating the database connection to the server container
Bit more cleanup
Use statements wrapper in \OCP\IDB
Fix tags unit test
Close session for avatar get

This somehow blocked the "Users" UI for me when having a lot of users. - Shouldn't hurt here.
"Group admin" default label (issue #7706)

Changed the column header to "Group Admin for" and the default value of
the multiselect box to "no group" if user is not a groupadmin for any
group.
Fix S3 connection
Fix S3 folder creation for new AWS API

This also fixes the unit tests
[tx-robot] updated from transifex
Merge pull request #11710 from owncloud/closeSessionForAvatars

Close session for avatar get
Merge pull request #10689 from owncloud/load_classfile_once

make sure class file is loaded once
Merge pull request #11720 from sebomoto/groupadmin-header

"Group admin" default label (issue #7706)