Validation has issues with adblock

[Jakob Ankarhem]

When validating a word the get request can cause issues with adblock.

All submits posts to /words/validate using body:

{
  word: string
}

if word is missing - return 400

If word exists, increment useage column in word table - return 200
If word doesn't exist, add to invalidGuesses table or increment useage in invalidGuesses table -- return 404
else return 500