Enforce POST in /logout route
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I have summed up the feature in concise words in the Summary section. 
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I have completely described the feature in the Description section. 
Summary
Enforce POST requests toward the /logout route.
Description
The /logout route currently served out GET and POST endpoints. GET requests should only retrieve data, so logging out should really only be possible with a POST request. This seems solvable by just including a tiny form in the navbar instead of a link.
Edited  by Kevin Morris