Submissions panel - show remaining submissions count

@ mention of reviewers`

@Didayolo`

A brief description of the purpose of the changes contained in this PR.

In submissions panel, now users can see for each phase the following:

• remaining number of submissions per day
• total remaining submissions

Depending on the percentage of the remaining submissions, the color of the box will change Green -> yellow -> Orange -> Pink -> Red Green shows max percentage of remaining submissions while Red shows min percentage of remaining submissions

Screenshots

Issues this PR resolves

• #723 (closed) -> Submissions left
• #1015 (closed)

Checklist

• Code review by me
• Hand tested by me
• I'm proud of my work
• Code review by reviewer
• Hand tested by reviewer
• CircleCi tests are passing
• Ready to merge