Category sorting and Google Tag tracker

Created by: samyakmehta

Description of PR This pull request includes two things:

• Bug fix : Sort Categories on Essentials page in alphabetical order
• Feature : Added Google Tag tracker for Google Analytics. The tracker used is configured to track usage of Essentials page

Type of PR

• Bugfix
• New feature

Relevant Issues
Fixes #...

Checklist

• Compiles and passes lint tests
• Properly formatted
• Tested on desktop
• Tested on phone

Screenshots

1. Category sorting in desktop

2. Category sorting in mobile

3. Page View Tracking

4. Click Tracking

5. Test data in Google Analytics