[4.0.0-beta.7] Issue: link to explorer

[friedger]

Issue found testing Stacks Wallet build , 4.0.0-beta.7.

As a power user I would like to be able to close the modal dialog and watch the transaction in the explorer.

[markmhendrickson]

This modal is getting removed entirely in favor of sending the user back to the home activity view with related information along the lines of what you suggest: #335