Add MyData Operator icon to home page

[dixonsiu]

Perform the followings:

• [x] add MyData Operator description in About
• [x] remove obsolete info in About
• [x] add Network to header menu to list up aNewGovernance, MyData, etc.

[dixonsiu]

Testing the layout and design.

[dixonsiu]

Decided to add Numbers and 2e Consulting as Network.

Network

• joint PoC (current or future)
• contribution from Personium
• MoU signed

Personium Community

• Slack member
• Attend workshop

[dixonsiu]

Agreed on only display logo to make alignment better.

[dixonsiu]

Current "About"

Suggestion