branding and mobile storybook

[pankajpatel]

Todo:

• [ ] Add Branding to storybook
  • [ ] Branding related Components
  • [ ] Configure branding and favicon from config
• [ ] Mobile Storybook
  • [ ] Conditional Split.js render
  • [ ] Mobile attribute support for the sandbox-application component
  • [ ] Switch to Mobile UI on resize
  • [ ] Allow panes to be collapsible on Mobile (maybe Desktop as well)