Update signon behaviour
Request a new file listing on route change
Differentiate between access failures

There are now different ui behaviours between a user's lack of access to
a particular bucket vs an oauth failure.

Oauth failures prompt for another permission grant request

Bucket failures have no resolution method in this module.
The reload button is gone since it isn't going to solve a bucket failure
issue.
Change button text and color
Merge pull request #31 from Rise-Vision/chore/update-signon

Update Initial Signon