Fixes #3: Randomize order that chartContent is being pulled in

Description

Adds functions in ChartGrid.vue to randomize order that cards are being shown

Changes Made

All in the script of ChartGrid.vue.

How to Test

View changes on MJ-3 and npm run dev

Related Issues

Provide links to any related issues.

Additional Notes

Include any extra information or considerations for reviewers.

Merge Request Checklists

• Ensure that code changes adhere to best practices documented in README.md
• Clean the code the way Vue likes it - run npm run lint --fix
• Document which browsers the site has been tested on:
  • Desktop/laptop
    • Chrome
    • Safari
    • Edge
    • Firefox
  • Mobile device
    • Chrome
    • Safari
    • Edge
    • Firefox