Use the same timezone throughout model, view, and controller

[Amber-K]

Views that selectively show information based on the local time are lagging behind the timezone that is being used for functionality behind the scenes, resulting in these two errors:

• Scholarship applications are not visibly marked as late immediately, despite having their access removed.
• During the evening, the calendar to select a scholarship deadline starts on a date that will be considered "the past".

[Amber-K]

I noticed these three system test failures occurring in ApplicantViewsSavedApplicationTest starting at 5:00 pm pdt:

• test applicant does not see a link to submit a late, unsubmitted application, line 60: expected not to find visible link "Submit", found 1 match: "Submit"
• test applicant does not see a link to edit a late, unsubmitted application, line 53: expected not to find visible link "Edit", found 1 match: "Edit"
• test applicant sees 'Late' badge when application is late and no other badges, line 76: expected not to find text "In Progress"