reduce private / specific information in code, make configuration easier?

[jentie]

• server name included in file 'index.html' and source code
• WLAN / IP address configuration hidden inside source code

[HSoeren]

Easier Configuration: Including Files.

The definition of colors and their codes could surely be outsourced; the user doesn't have to look into this, and if he does, he will find the appropriate documentation to explain it - simply included in the final sketch.

I'll look into it and if possible come back with a branch and pull request.