Redesigned App & Org Branding

This release changes the layout of our app pages and adds org branding features. Read release post at cloudcannon.com.

Before:

![Old sites listhttps://dam-cdn.cloudcannon.com/changelog/images/change-log/old-sites-list-empty.png){: .screenshot}

After:

![New sites listhttps://dam-cdn.cloudcannon.com/changelog/images/change-log/new-sites-list-empty.png){: .screenshot}