Adds new account & updates HTML.

Resolves:

- [JIRA-1266](https://issues.apache.org/jira/browse/RAVE-1266)
- [JIRA-1256](https://issues.apache.org/jira/browse/RAVE-1256)
- [JIRA-1257](https://issues.apache.org/jira/browse/RAVE-1257)
- [JIRA-1258](https://issues.apache.org/jira/browse/RAVE-1258)

Which brings authentication to a very-nearly-mostly done state.