implement favoriting posts in the frontend

[elaine331917]

backend functions exist already

[chphoom]

just a note: not sure if u saw but in the places where there are multiple challenges i adjusted ur original code for save sand unsave to accomodate holding multple saved values, so save adn unsave take in object values. you'll probably want to do the same for posts (especially for posts lol)

[elaine331917]

favorite post button should only be on the individual post page no?

[chphoom]

favorite post button should only be on the individual post page no?

ah i thought we would be adding buttons in the post hover overlay thing