Move certificate management code to core
Make external shares work with imported self-signed certificates
Verify names of certificates
No need for this folder to be world accessible
fix indention
Move certificate management interface from files_external to core
Add certificate class
remove outdated checks
move certificate classes to their own namespace
Cleanup certificate code
Rename namespace
fix test
check for blacklisted file certificate filenames
Cleanup routes
Add unit tests and fix rootcerts creation bug
Add test for expired certificate

Will only work after tomorrow
Explicitly set the timezones
5.3 syntax...
Merge pull request #10420 from owncloud/external-share-self-signed

Make external shares work with imported self signed certificates