fix retrievel of group members and cache group members
properly cancel a Paginated Results operation in order to avoid protocol errors, fixes #10526
abandon ongoing paged search before starting a new one
abandond paged search only if PHP supports them
init a new paged search on read operations to satisfy OpenLDAP
make scrutinizer happy, very minor changes
fix changed variable name
Fix file size comparator return value
check if I can create a file at the location
log exceptions when listing files
fix amazon s3 issues

folder size and mtime is always unknown in s3

more s3 fixes

make rescanDelay of root dir configurable, add on the fly update of legacy storage ids, !isset -> empty when checking strings

reduce number of http calls on remove and rmdir

fix typo
make some storage tests explain what went wrong
strict comparison
files_extern: remove empty Body and ContentLength in Amazon S3 mount

fixes #10501

Conflicts:
	apps/files_external/lib/amazons3.php
extract batchDelete(), better comments
Merge pull request #11471 from brumsoel/master

Fix file size comparator return value
unify style of config.sample.php

* use ' instead of " for config option
* place default parameters where useful into sample
* use proper comment block
* limit line size to 80 characters
re-arrange the config options and sort them in a semantical way
Fixes in config.sample.php

* owncloud -> ownCloud
* add default value
* proper comment style
* fix line wrapping and minor typo
* remove duplication
* add Vincents proposals
Merge pull request #11455 from owncloud/config-sample-cleanup

Config sample cleanup