all the tests are OK

add tests for topaz-app like_status

add tests for prepare_post_like_status and post_like_status

refactoring mysql-helper.postLikeStatus

it's easier to understand this function now.
queries and logic are separated inside the function.
Merge branch 'hmu/french_maid' of https://github.com/SIMS-Topaz/sims-topaz-server into hmu/french_maid