Preventing access to the config folder

It isn't uncommon that admins create a backup file of the config (i.e. `config.php.bak`) before performing any changes. This would allow everybody to read the backup of the configuration file which contain several secret and critical values.

I don't believe this is worth a backport or getting added to the installer. It's just a nice to have. People that create public readable backups of their configuration are the one to blame, not us :-)
Merge pull request #8334 from owncloud/protect-co

Preventing access to the config folder
Merge pull request #8332 from owncloud/l10n-access-untrusted

This adds one more missing untranslated text from lib/share
Normalize paths when moving properties
properly quote etags
add setting to set default expire date
Merge pull request #8335 from owncloud/sharing_set_default_expire_date

[sharing] allow admin to set default expire date

* owncloud/sharing_set_default_expire_date:
  add setting to set default expire date
Merge pull request #8304 from owncloud/add-xss-tests

Add unit tests for arrays and quotationmark

* owncloud/add-xss-tests:
  Remove uneeded newline
  Fix indentation
  Add unit tests for arrays and "
Make PHPUnit_Framework_TestListener implementations compatible to 4.0.
add additional rows to the select statement, 'stime' is needed for the expire check
Remove redundant test case for non-HTML string.
Split testP() tests into multiple methods.
Use PHPUnit's expectOutputString() instead of performing output buffering.
Normalise testcleanuplistener.php indentation and end of file.
Merge pull request #8339 from owncloud/fix_unit_tests

fixing unit tests
Add flv to known mimetypes
Use echo since print_unescaped is not defined

Fixes https://github.com/owncloud/core/issues/8342
Merge pull request #8026 from owncloud/remove_shared_folder

remove the "Shared" folder
Merge pull request #8337 from owncloud/flv-to-mimes

Add flv to known mimetypes
Merge pull request #8338 from owncloud/phpunit-4.0-compat

Make PHPUnit_Framework_TestListener implementations compatible to 4.0.

* owncloud/phpunit-4.0-compat:
  Normalise testcleanuplistener.php indentation and end of file.
  Make PHPUnit_Framework_TestListener implementations compatible to 4.0.