Playlists UI change

[Ssionn]

Since the squash didn't want to use my description, here are the changes:

Playlist.pug

• .valNo, .valTitle and .valAddedBy have been correctly aligned.
• Each song in the list is a card of some sorts.
• Removed the margin between the iframe and the current song playing.
• Added some rounded corners for a more modern look.

Public_playlists.pug & Playlists.pug

• Instead of a table you now see cards where you can see the total amount of songs and who made the playlist. This has the potential for album covers.

[Ssionn]

I've added some improvements to the playlist that belongs to the user as well as the public one.

[Ssionn]

Disregard the squash, it didn't listen to what my description was and just used it's own. Stupid git.