Implement RPC connection status indicator #992
Description
The problem:
Currently when vortex can't establish connection with the rpcs, the user is still able to go through the whole process and at the end it's going to fail.
Solution:
Users should be able to see there is a problem with rpc connection right away.
The RPC connection code refactor is in progress here: #991
Designs:
When settings button is visible:
When user goes to the settings menu:
