Fix switching between views
Add a popover with artist albums relative to infobox
Fix context/content update
Update track in popover
Fix popular playlist
Revert "Fix popular playlist"

This reverts commit d6269a91a076ba80ba974fbf8b2beb721b94c781.
Proper fix for popular mode
Fix pop album and add an option to set darken views
Tracks of current songs are now available in popup, remove old code
Finally fix scrollbars
Just add populate to mainloop
Don't hide popup on current changed
Launch populate in idle loop
Fix populating view
Tracks of current songs are now available in popup, remove old code
Clean code
Use a GtkBox instead of GtkGrid