Flesh out proposal form view tests.

Basic tests that identify and verify form elements on the page.
Tests do not include doing form submission - this is meant to be
handled by proposalForm_Submit definitions.

Browser closing has been removed from the feature because this is now handled globally.
For now, any nomenclature about specific browser types is being removed - Cucumber will run against your default browser for now.  Eventually, I will provide specs that specify browsers.  This was removed because I cannot assume that you have the browser installed, and should provide packages for install.  I need to figure out the most elegant way to do this. :)