feat: onboarding 2nd iteration

[tomaszantas]

Description

• [x] refactor & unify sizing of TBot components
• [x] fix fade out section (#221)
• [x] fix scroll bar spacing
• [x] fix the lack of height adaptation for single messages
• [x] use MainLayout with Onboarding
• [x] skip chatting
• [x] add blank expert view
• [x] set up flow of messages

TODO in next PRs:

• add Redux integration - installing Docker may require to reboot system, so then the user should start onboarding from different point #23
• adjust timing of messages
• styling of dynamic elements within messages (processing..., done, fail)
• Blockchain synchronization step
• Docker install instructions #23
• Download Docker Images #309

Motivation and Context

22

221

307

Partial coverage of:

24

How Has This Been Tested?

[tarnas14]

the close button on help prompt got pushed out of the prompt box

[tomaszantas]

Fixed also close button issue: