Fix minor bugs
Prevent advisors from evaluating students too soon
Add view table in evaluations/show.html.erb
Allow admins to publish a single project's status
Let admins publish all non-pending projects
Let admins change submission status for advisors

- Let admins change submission status after advisor_decision_deadline
Add warning for admins editing projects with subs

- Also, add advisor name to evaluations/show.html.erb
Limit admin actions on pages/submissions.html.erb

- Now, their actions do not affect submissions that are pending
  advisor approval
Add `downcase_status` callback to submissions.rb

- This fixes the bug that let admins approve "pending" submission
  decisions