Upload and download more data for posts [Implementation]

[getinthedamnbox]

Currently, when the user creates a post, only the image and the user's email get uploaded to the database. The user should also be able to supply a title and description, and those data items should be downloaded from the database whenever the post is displayed. The user's name should also be displayed on the post.

Additionally, the route for getting a post's data should get the list of users who like the post and the list of comments on the post.