Frontend market testing

[ferostabio]

close #505

• [x] loading markets
• [x] check the 1st row to be unfolded
• [x] spot the best label
• [x] fold and unfold the second row
• [x] on click a market, open the borrow page with the selected tokens and chains

[github-actions[bot]]

Please test this PR on: https://v2-staging-507-dot-fuji-306908.ey.r.appspot.com

[ferostabio]

There are several issues @NikolaiYurchenko

• The markets tests don't even run. Metamask finishes the account test with a modal about changing the network, so it gets stuck and nothing happens

• There was duplicated code (disclaimer dissmisal), so I added a command. All guides show how to do it in js, and the tests pass, but TypeScript complains that the function doesn't exists.

https://stackoverflow.com/questions/58270901/es2015-module-syntax-is-preferred-over-custom-typescript-modules-and-namespaces and https://medium.com/@gghalistan/adding-custom-commands-to-cypress-typescript-28d23f90c2fd should be of help!

• Remember to fix It is unsafe to chain further commands that rely on the subject after this command. It is best to split the chain, chaining again fromcy.in a next command line. You can do it here instead of the account testing PR.

[ferostabio]

@brozorec can't merge this one, pls review!