Should now work with organizations as well.

You can now select a source where your paper is stored from your own
account and your organizations. It will then load repositories in your
select, where you can select the paper once again. It will also load
possible reviewers for you.

Possible reviewers for a regular user account is anybody. They will be
added as collaborators when they post their review. As for an
organization account, possible reviewers is limited to only the people
in the organization. If you select a non eligible user to review your
paper, the eligible users will still get the request, however, an alert
will show up saying that not all reviewers were added.
Changed some wording and fixed showing user text.
Merge branch 'master' of github.com:mpeterson2/Pdf-Reviewer