Nik/157 group analytics testing

[nikvijay07]

PR Title

Issue Number(s): #157

What does this PR change and why?

• deleting sample data and stacked bar graphs
• some refactoring for displaying active and total patients
• remove pink bars
• fixed overall bar graphs
• added data for overview data points

Checklist

• Requirements have been implemented
• Acceptance criteria are met
• Database schema docs have been updated or are not necessary
• Code follows design and style guidelines
• Commits follow guidelines (concise, squashed, etc)
• Relevant reviewers (Senior Dev/EM/Designers) have been assigned to this PR

Critical Changes

• Database change/migration to run
• Environment config change
• Breaking API change

Related PRs

• #number_of_pr

Testing

Enumerate steps to test the functionality of your ticket. This should include edge cases and testing of error handling, if applicable.