andela / metis-ah / 370

93%

develop: 91%

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travis-ci

feat(like comment): user can like a comment

- create relationship in the "CommentLikes" table between comment like and the user
- toggle the boolean "liked" column each time the same sends a post request on the same comment
- return "comment liked" or "comment unliked" in each case
- return an error if a deviation occurs

[Delivers #159987419]

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