Merge remote-tracking branch 'upstream/master' into feat/disable-comments-526

Api/Exportable.php

Common/Access.php

Controllers/api/v1/blog.php

Controllers/api/v1/wire.php

Controllers/api/v2/boost/feed.php

Controllers/api/v2/feeds.php

Controllers/api/v2/feeds/container.php

Controllers/api/v2/media/upload.php

Core/Blogs/Blog.php

Core/Email/Campaigns/Templates/whitehouse.md.tpl

Core/Entities/Delegates/EntityGuidResolverDelegate.php

Core/Feeds/Activity/Delegates/AttachmentPaywallDelegate.php

Core/Feeds/FeedSyncEntity.php

Core/Feeds/Firehose/Manager.php

Core/Feeds/Top/Manager.php

Core/Feeds/Top/Repository.php

Core/Feeds/Top/ScoredGuid.php

Core/Media/ClientUpload/ClientUploadLease.php

Core/Media/ClientUpload/Manager.php

Core/Media/MediaProvider.php