Added edit functionality to the main page '/'.

-On get of '/', we now sort the albums array due to the nature of pqsl appending the updated row to the bottom.
-On get of '/albums/edit/:id' displays the page where you can update the information.
-On post of '/albums/edit/:id', updates the database for where id matches album_id.
-In AlbumRepo, added an update method to accomodate the post request. It updates the entire row where the id matches.