[WIP] sharing feature tests

Allow Owncloud apps to add new items to the “new” file menu. 

added logic necessary for preconditions and postconditions of sharing tests

Added sharing by link tests and sharing with group

Added test which reproduces issue 19950 (adding expiration date)

refactored given and then statements to be preconditions and not operations

Drop OC_SubAdmin and replace usages

include the final update in the transaction when moving a folder in the cache

Remove invalid type-cast

Fix icon update to be more consistent

This is an `is_array` operation and not a `in_array` one. Thus this typecast is not required.

Fixes https://github.com/owncloud/core/issues/20095

The root of a storage always exists

Make Travis CI pass when DAV was not touched

Apply new checkbox style in users settings

Makes the details bar show the same icon as in the list.

ignore any clover.xml - which is generated by some phpunit calls

On rename, also refresh storage_mtime of the target file

Allow separate templates for internal and external share notifications

Don't log expected Swift 404 responses in files_external

Display external storage status as tooltip

Kill empty app.php in provisioning_api

Issue 19583 invalid shares

Add sharee list view js tests

Update certificate bundle

Fix file list reload callback result

Syncs with ca-certificates version 2.5.

- Removes expired TURKTRUST Certificate Services Provider Root 1 (https://bugzilla.mozilla.org/show_bug.cgi?id=1165992)
- Removes obsolete TC TrustCenter certificates (https://bugzilla.mozilla.org/show_bug.cgi?id=1159070)
- Removes ComSign Secured certificate as it is not used for websites (https://bugzilla.mozilla.org/show_bug.cgi?id=1160208)
- Adds updated TURKTRUST certificates as the old ones are expired (https://hg.mozilla.org/integration/mozilla-inbound/rev/2f1a37cb43ac)
- Add Certinomis as root certificate (https://bugzilla.mozilla.org/show_bug.cgi?id=1169083)

Fallback to default mimetype detection mechanism