endpoints: add Deezer's endpoints

[anthonymq]

Hello,

Deezer has a weird implementation were you need to specify the output or it is returned as plain text which fails the unmarshalling.
It could help future developers.

There was also some non formatted lines in the endpoints file.

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Patch Set 1:

(1 comment)

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Patch Set 1:

(1 comment)

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This PR (HEAD: 750b2a5) has been imported to Gerrit for code review.

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Message from Anthony MARQUÊS:

Patch Set 2:

(1 comment)

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