Implement Initialize account banner on dashboard - Closes #1660

[massao]

What issue have I solved?

#1660

How have I implemented/fixed it?

Created new Banner component that have title. children and footer props, title being an String, and children and footer being nodes.
Added the same conditions that we have on the wallet, for showing or not the banner for initializing the account.
The background and button are different from the design, to be more consistent with the layout.

How has this been tested?

The banner should not appear if the user is not logged in any account.
Create a new account, and transfer some LSK to it, or login into an account that has LSK and didn't activate the account yet, and check if the banner shows up on the /dashboard, after activating the account, the banner shouldn't appear again.

Review checklist

• The PR follows our Test guide
• The PR follows our CSS guide

[slaweet]

As discussed, some changes to the specification:

• The "Create first transaction" button should skip the current first step of "Account initialization", as it was duplicate to the banner.
• Second step of initializaiton should contain to link from the frist step
• going to /wallet/send page (e.g. Send button on wallet page) should never show Account initialization.

This might require some e2e test to be updated.

[slaweet]

Nice, Massao 👍

[Efefefef]

👍 Thanks Massao. Everything works
Regarding tests please check comments and tell me if you need further clarification or help