fix files_external storage id migration
test files external amazon s3 storage id migration
Properly register sharing hooks and proxies

This will fix failing tests when shares weren't cleant up on delete due
to missing hooks.

Added login for user1 in setUp().
Merge pull request #11865 from owncloud/stable7-fix-enc-sharingtests

Properly register sharing hooks and proxies
update 3rdparty to match it's stable7 branch
Fix stupid copy paste fail

...
on xp'ed mode and switching configurations: save raw mode instead of toggling filter mode in tabs since their status is unknown and dealt with by the Wizard. Fixes #11848

Backport of 8a48b088ed22f23f961da3c0eb9591989f8cc98a from master
Merge pull request #11614 from owncloud/fix_files_external_s3_storage_id_migration

fix files_external storage id migration
get the source path and owner in a pre hook and the target path and owner in a
post hook
Fix typo
don't move versions if only the mount point was renamed
allow passing driver options, fixes #11718
add driver options to config samples
Capitalize Checks in admin page
fix config.sample.php linebreak
Only rescan trash folder when checking deleted versions

This fix prevents the file scanner to rescan the WHOLE storage and reset
the etags by mistake.

Backport of 97a51c46eddf4c1e8c691eea96dd762425ce17ca from master
backport some strings to stable7
Check for cert bundle existence before using it
Store curl error message directly
Merge pull request #11950 from owncloud/stable7-s2s-fixcertcheckwhennocertfile

[stable7] Check for cert bundle existence before using it