check for path traversal in redirect_uri
Merge pull request #53 from FriendsOfSymfony/hotfix/redirect-uri-path-traversal

Check for path traversal in redirect_uri
CS fixes
Merge pull request #54 from FriendsOfSymfony/Spomky-PHP-CS-FIXER

CS fixes
Fix HTTP Content-Type including charset
Merge pull request #56 from Spomky/URL-Encoded

Fix HTTP Content-Type including charset