Include fee reference when creating new prediction market

[grctest]

Is your feature request related to a problem? Please describe.

When attempting to create a prediction market, no estimated fee is provided to the user.

Describe the solution you'd like

Inform the user how much BTS is required to create the prediction market.

Describe alternatives you've considered

Create documentation external to this page which identifies the fee type for the user

Do nothing

Additional context

Depending on the length of the prediction asset name it could be quite a significant fee, so informing the user of the fee could avoid upsetting over spending on fees.

[sschiessl-bcp]

Was the fee visible and correct in transaction confirm popup?