Issue 1777 - Move the Sign Up tests out of the Invite Queue feature, and start to break them up into separate scenarios.
Break up signup tests into six different scenarios (intead of two).
Use scenario outlines for validation tests for new user signup.
Group user steps by Given, When, and Then.
Make User Create tests DRYer by reusing steps and scenarios; also check to see if a user has actually been created rather than just looking at the UI.

whitespace cleanup before PR

Add back missing assertion
Merge pull request #1465 from someonefromthewater/issue_1778

Issue 1778 - Automated Test - new user signup