Responsive views: Create new wallet seeds list + Warning pop up

[MariaPleshkova]

Responsive views master issue: #1820

Description (seed clipboard copy warning) was a little bit changed ( master issue: #2051 )

Create wallet-1
Previews: https://xd.adobe.com/view/3c6180d3-ba67-406e-4a89-c3c4327f6371-4a50/
Specs: https://xd.adobe.com/spec/7a799a2b-9125-4e38-4239-ec216b96e008-0c48/

Two content columns are stacked in top-down manner when scaling to the smallest view + an arrow to see the whole copy or to hide it is added

Create wallet-2
Previews: https://xd.adobe.com/view/b55415c0-b606-49b7-5f64-999abca016c3-c365/
Specs: https://xd.adobe.com/spec/7fddf2d0-4eff-482c-58be-0d02cf94d891-09ec/

When scaling to the smallest size, "Confirm Seed Key" is moved to the card's description place (under the title).

Create wallet-copy warning
Previews: https://xd.adobe.com/view/47458d9e-9e71-4d15-6e46-93ebd6c5f387-3174/
Specs: https://xd.adobe.com/spec/42b43c75-26b6-4f06-62ae-7c63d74524fe-3485/

Two content columns are stacked in top-down manner when scaling to the smallest view.

Also on mobile layouts full logo is changed to DCR symbol only.