UI Customization Options in Startup script

[wilwade]

To make demos clearer and slightly more custom, lets add some basic customization options to the startup script:

• [x] Setting the name of the application: Default still "Social Web Demo"
• [x] Setting/choosing a color / color pallet?
  • Not sure how this would work, but perhaps this is just changing the header background or something
  • The idea is to make it extra clear in cross provider demos that the application