Improve tableview cells

[pdiazmon]

Now, tableview cells show a rounded image and a label text.
To improve its layout and the information it shows:

• For playlists: image + playlist name + number of songs + total play time
• For artists: image + artist name + number of albums + total play time
• For albums: image + album title + year + number of songs + total play time
• For songs: image + song title + play time + order within the album (if browsing from albums view)

[pdiazmon]

in development