Setup list summary and redo scrolling

[haiyingweng]

Sorry this is another big PR 😥

Changes Made

• Made the entire ListVC a collection view
• The first section of ListVC is one ListSummaryCell
  • Added collaborators and privacy and tagCollectionView in this cell
• The second section of ListVC is the buttons and movies/shows.
  • MediaListHeaderView is the header of this section and is always pinned to be visible, it contains the buttons and the rounded top view
• Changed some assets to have clearer resolution

Screenshot