[bisq-network/bisq] Recommended security deposit display (#4426)

[MwithM]

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### Description

Not exactly a bug, but UX improvement. 
I don't know how to see the security deposit suggestion, my security deposit is always the same. Removing the security deposit and going back and forth when creating an order doesn't make the suggested security deposit appear.

#### Version

<!-- commit id or version number -->
2.3.7

### Steps to reproduce

<!--if you can reliably reproduce the bug, list the steps here  -->
Make an offer when you already used your own security deposit for another offer in this market and it will use this security deposit, without even being able to know what the suggestion is at this time.

### Expected behaviour

<!--description of the expected behavior -->
I suggest to display suggested security deposit when clicking the "i" info next to "set both traders' security deposit" field. Any other way to be able to consult suggested security deposit easily is welcome.


### Actual behaviour

<!-- explain what happened instead of the expected behaviour -->
I'm not able to find the suggested security deposit. If there's a way and there's no need to make further changes, I'll document how on the wiki.


### Screenshots

<!--Screenshots if gui related, drag and drop to add to the issue -->
![issue recommended deposit](https://user-images.githubusercontent.com/50149324/91031028-4b8ad680-e600-11ea-88ce-a1e22a3e5737.jpg)

### Additional info

Related PR: https://github.com/bisq-network/bisq/pull/4347





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https://github.com/bisq-network/bisq/issues/4426
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