Fixed a bug where the album would not update its thumbnail after photos
were added to it until program restart. However, now there is no default
placeholder and it seems the selectable area of the album tile is greatly
reduced without a thumbnail. Going to look into having a default image
binding if there is no thumbnail yet. Also updated the albumView tiles to
use large thumbnails.
Merge branch 'master' of https://github.com/bsanders/softeng