[Cashtab] Update configure.js with direct antd calls

Summary:
This diff replaces all uses of Notification.js functions in Configure.js with direct calls to the antd notification component.

Integration tests added for key success and error notifications, however does not cover every single permutation otherwise it will clog the test suite. This is because the notification checks occur at the tail end of a very long end to end workflow.

Test Plan: npm test

Reviewers: bytesofman, #bitcoin_abc

Reviewed By: bytesofman, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D15420