[master] Port Same-Site Cookies to master

[LukasReschke]

Fixes #50

[mention-bot]

@LukasReschke, thanks for your PR! By analyzing the annotation information on this pull request, we identified @DeepDiver1975, @BernhardPosselt and @rullzer to be potential reviewers

[MorrisJobke]

💥

PHP Fatal error:  Class 'OC\Appframework\Middleware\Security\Exceptions\StrictCookieMissingException' not found in /drone/src/github.com/nextcloud/server/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php on line 141
[info] build failed (exit code 255)

[LukasReschke]

PHP Fatal error: Class 'OC\Appframework\Middleware\Security\Exceptions\StrictCookieMissingException' not found in /drone/src/github.com/nextcloud/server/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php on line 141
[info] build failed (exit code 255)

How much I love case-sensitive and case-insensitive OS…

[LukasReschke]

Casing changed. Let's see if Drone is happy now… Tests are passing locally… (well they also passed before but 🙈 yay … computers 😉 )

[rullzer]

👍

[LukasReschke]

Since it's a simple port to master: Merge.