* Style fixes.
* Fixed infinite loop in SpotifyPlaylistUpdater.
* Use mid color instead of self-calculated text color value in charts delegate.
* Add logging to debug SearchWidget's performance better.
* Added SourceTreeView::renamePlaylist( playlist_ptr ).
Add skeleton What's New page
Remove underlying scrollbar
Add Inbox icon to list of new features
Use meaningful widget names
Add additional features to What's new
Add TODOs for Logos in What's new
Add pages for each new feature
Add dummy text in InboxFeaturePage
Style feature buttons
Add Open URL thumbnail
Add Beats Music thumbnail
Add IPv6 Thumbnail logo
Add Design thumbnail placeholder
More work on the What's new layout
Remove spacing above Label text