Merge branch 'master' into admin

CHANGELOG.md

CREDITS.md

INSTALL.md

Makefile

README.md

SECURITY.md

css/bootstrap/privatebin.css

css/noscript.css

css/privatebin.css

i18n/cs.json

i18n/nl.json

index.php

js/package.json

js/privatebin.js

lib/Configuration.php

lib/Controller.php

lib/Data/AbstractData.php

lib/Data/Database.php

lib/Data/Filesystem.php

lib/Data/S3Storage.php