Add copyright and license information to About window

[bajiat]

We should mention our copyright and our (new) license in the APInf About window (about.html).

To do

• Add copyright text to About window
• Add license information to About window

Proposal:

• Copyright 2017 Apinf Oy
• License Licensed under EUPL v.1.1

[marla-singer]

@bajiat Is placement okay or change order?

[bajiat]

I think they should have their own section with a header, e.g. "Copyright and license"

[marla-singer]

Can you please spicify the headers order? Is the next order good?

• Versions
• Project links
• Credits
• Copyright and license

[bajiat]

@marla-singer I would prefer this order:

• Versions
• Copyright and license
• Project links
• Credits

[marla-singer]

@bajiat The result is