implemented stats page for admins

[pengyk]

Tickets:

• HCK-#247

List of changes:

• Added stats page for admins
• Could add sponsors to the stats page without access to the table page

Type of change:

• New Feature

Please delete options that aren't relevant.

• [x] New feature (non-breaking change which adds functionality)

How did you do this?

How to test:

Questions:

PR Checklist:

• [x] Merged develop branch (before testing)
• [x] Linted my code locally
• [ ] Listed change(s) in the Changelog
• [ ] Tested all links in project relevant browsers
• [x] Tested all links on different screen sizes
• [ ] Referenced all useful info (issues, tasks, etc)

Screenshots

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