User Story: Liking posts

[Dym077]

As a logged in user I can like other users posts so that I can keep them in my feed and they can see my likes

***Acceptance Criteria

• [x] A like button
• [x] Liking a post will make the logged in users likes to update
• [ ] Liking a post will make the user who's post has been liked to be alerted
• [x] The post-liking integer will increase by one

[Dym077]

Liking a post will make the user who's post has been liked to be alerted, should be a future feature.